CoreView alternative for Microsoft 365
CoreView keeps your tenant in line. Who is watching what reaches your data?
CoreView runs Microsoft 365 administration at scale: delegated admins inside virtual tenants, configuration baselines with rollback, licence pools and workflows. 1Security starts where that console stops, at the data itself: who can reach each file and mailbox, what left and from where, which agents read what, three years of enriched history, and compliance mapped to eleven frameworks. Many customers run both, and the free POC runs next to CoreView on your own tenant.
- Verified 25 Oct 2026
- Keep both or switch
- Free side-by-side POC
- Every claim sourced below
Fair first
What CoreView does well.
Written so a CoreView customer nods. These are real strengths, built over years for large tenants, and a team that relies on them can keep them while 1Security takes the data side.
Delegated administration
Virtual tenants carve the directory by any Entra attribute, country, domain or organisational unit, and give each region or helpdesk its own admin scope, licence pool and number pool, with custom roles and no per-admin fees.
Configuration resilience
Tenant settings backed up with a year of retention, compared against a CIS Microsoft 365 Foundations baseline, drift alerts at configuration-type level, rollback to a known-good state and sync between Dev, Test and Prod tenants.
Operations at scale
More than 150 out-of-the-box management actions, workflows that chain them on a schedule or an API call, more than 100 playbook policies with owner or manager attestation, and on-premises AD and Exchange tasks from the same console.
Licences and rewind
Licence pools delegated to regions and divisions, chargeback by department, policies that flag inactive licence holders and unused Copilot seats, and a 30-day rewind for accidental changes to users, groups, licences and mailboxes.
What it does not touch
Four questions an administration console was never built to answer.
CoreView is built around the directory: users, groups, licences, mailboxes, settings and the people allowed to administer them. The questions below start from the data instead, and a security team meets each one during an incident, an audit or a Copilot rollout.
- 01
Who can reach this file, and who actually did
1Security starts from the file: direct permissions, sharing links, group membership, site roles, inheritance, apps, agents and guests resolved into one answer per file, next to who opened it, from where and on which device. CoreView’s Control for SharePoint add-on, launched in June 2026, imports item metadata in priority waves against a daily capacity and reports sharing links, direct access and unique permissions per item; who actually opened the file lives in a separate audit report with a twelve-month window.
- 02
Sensitive data in content, not only in labels
CoreView policies act on sensitivity labels already applied: a site with anonymous sharing and a labelled file, an item with a selected label shared through an Anyone link. Nothing in the documentation reads file content. 1Security scans files and emails with its own engine, more than 300 detectors plus OCR for scans and photos, on any licence: account numbers, contracts, identity numbers, passwords saved in files. Content is streamed through the scan and never stored.
- 03
Three years of enriched history, not twelve months and a ticket
CoreView keeps the unified audit log for twelve months, searches the last nine in the portal and serves older records through a support ticket within five business days; most reports refresh with a daily full import, and sign-in data is delayed by an hour by design. 1Security keeps three years as standard, each event carrying the user, file, device, location, app and the sensitivity of what was touched, and flags what breaks a user’s own pattern: VPN, Tor and datacenter networks, places nobody works from, devices never seen before.
- 04
AI agents and Copilot: reach, not seat counts
CoreView’s Copilot policies manage licences: eligible users, licensed users without activity, low usage. Agents do not appear in the documentation; the Entra app policies list service principals with file, mail or site permissions and send a report. 1Security shows what each agent and Copilot can actually read across files, sites, mailboxes and users, who deployed it, what it did and when its behaviour changed, with quarantine and identity actions, plus Copilot readiness with a fix list.
Side by side
1Security vs CoreView, row by row.
Three states, not two: where CoreView has a lighter version of something, or the better one, the row says so. Every CoreView cell carries a number that resolves to a public source below the table.
- 14Covered
- 2Partial or lighter
- 0Not covered
- 3Covered
- 13Partial or lighter
- 0Not covered
| Capability | 1Security | CoreView |
|---|---|---|
| Gaps and incidents | ||
| Activity history | 1SecurityCovered 3 years as standard, each event carrying the user, file, device, location, app and the sensitivity of what was touched | CoreViewPartial or lighter Unified audit log kept 12 months; the portal searches up to 9 months, older records by support ticket within 5 business days; Extended M365 Logs sold as an add-on2 |
| Sign-in logs and locations | 1SecurityCovered Per-user sign-ins with network, device and Conditional Access coverage; country, city, VPN, Tor and datacenter classification, map, per-user travel | CoreViewPartial or lighter Sign-in reports with a map in Entra ID audit; sign-in data delayed one hour by design, history starts seven days before registration; no network classification documented4 |
| Anomaly detection | 1SecurityCovered Learns what is normal per user, app and agent; threshold you set and re-apply to history | CoreViewPartial or lighter Identity Risk dashboard scores users daily from security settings (Breach Probability, Attack Surface); playbook policies are rule-based7 |
| Devices | 1SecurityCovered Every device touching data, managed or not, unmanaged ones flagged, disable action | CoreViewPartial or lighter Intune-enrolled devices only: compliance, configuration, encryption and sync policies, refreshed by the daily full import9 |
| Sensitive data detection | 1SecurityCovered Own engine with 300+ detectors and OCR on files and email, on any licence; Purview detections as a second opinion | CoreViewPartial or lighter Policies filter on sensitivity labels already applied (sites and items shared anonymously with a selected label); no content scanning documented10 |
| Administration, compliance, AI | ||
| Permission graph per file | 1SecurityCovered Direct grants, links, groups, site roles, inheritance, apps, agents and guests resolved into one answer per file, with the access history beside it | CoreViewPartial or lighter Control for SharePoint add-on (June 2026): sharing links, direct access and unique permissions per item, imported in priority waves11 |
| Remediation | 1SecurityCovered 40+ actions across users, sites, files, apps, licences, devices, agents and email; review queue, grace period, revert, read-back confirmation | CoreViewCovered 150+ management actions, custom PowerShell actions, workflows and 100+ playbook policies with attestation; link downgrade and inheritance restore in Control for SharePoint24 |
| Delegated administration | 1SecurityPartial or lighter Three access levels synced from Entra roles, per-tenant scoping and tenant groups for MSPs; no virtual tenants or licence pools | CoreViewCovered Virtual tenants on any Entra attribute scoping users, groups, Teams, devices and SharePoint; custom roles, licence and number pools14 |
| Configuration backup and rollback | 1SecurityPartial or lighter Tenant settings read for Security Score and compliance checks; no configuration backup, baseline deployment or rollback | CoreViewCovered Configuration backup with one-year retention, drift alerts, restore to desired state, change management across tenants15 |
| Compliance mapping | 1SecurityCovered 11 frameworks on shared requirements, weekly snapshots, dated evidence packs | CoreViewPartial or lighter Tenant configuration benchmarked against the CIS M365 Foundations 6.0.1 baseline; no mapping to GDPR, NIS2, DORA or ISO in the documentation16 |
| AI agents and Copilot | 1SecurityCovered What each agent and Copilot can reach across files, sites and email, who deployed it, activity and anomalies, quarantine; readiness screen with a fix list | CoreViewPartial or lighter Copilot licence reports and policies (eligible users, unused seats, low usage), Copilot activity audit; agents not covered in the documentation17 |
| Fit and deployment | ||
| Public API | 1SecurityCovered REST for logs, detections, alerts, users, compliance, readiness; MCP server with the same reads | CoreViewPartial or lighter Public API lists, starts and reports the status of Workflows only; no report, audit or permission endpoints19 |
| SIEM feed | 1SecurityCovered Enriched events pulled by Sentinel, Splunk or any SOC over the API | CoreViewPartial or lighter SIEM Connector add-on pushes the CoreView operator audit log into your Event Hub; Microsoft 365 audit data is not part of the feed20 |
| Deployment and residency | 1SecurityCovered SaaS, your own Azure (BYOC) or on-premise at any size; a dedicated database per tenant | CoreViewPartial or lighter SaaS only, hosted on Azure in North Europe, East US, East US (GCC), Canada East, Australia East and UK South; EU region chosen at onboarding21 |
| Organisation size | 1SecurityCovered No minimum seat count; first findings within one to two hours on a small tenant | CoreViewPartial or lighter Built for enterprises; Control for SharePoint is aimed at organisations of 1,000+ users; no public minimum stated23 |
| Microsoft licence needed | 1SecurityCovered Nearly everything on Business Basic, E1 or E3; no E5 or Purview for content scanning | CoreViewPartial or lighter Priced per licensed identity on a quote; required Microsoft plans not stated beyond "a Microsoft 365 license"1 |
- Covered
- Partial or lighter
- Not covered
Sources for every CoreView claim
Verified 2026-10-25- 1.CoreView pricing, plans and add-ons (per licensed identity) - www.coreview.com/pricing
- 2.CoreView Knowledge Center: understanding data retention - help.coreview.com/en_US/infrastructure/understanding-data-retention
- 3.CoreView Knowledge Center: set timeframe for Audit reports (12-month retention) - help.coreview.com/en_US/view-audit/set-timeframe-for-audit-reports
- 4.CoreView Knowledge Center: understanding data import (daily full import, sign-in delay) - help.coreview.com/en_US/infrastructure/understanding-data-import
- 5.CoreView Knowledge Center: Audit overview (unified log source) - help.coreview.com/en_US/audit-get-started/extended-m365-logs-overview
- 6.CoreView Knowledge Center: Audit report categories (map in Entra ID audit reports) - help.coreview.com/en_US/audit-report-categories
- 7.CoreView Knowledge Center: Identity Risk dashboard - help.coreview.com/en_US/identity-risk-dashboard/identity-risk-dashboard-identity-risk-dashboard
- 8.CoreView Knowledge Center: Security and Identity playbook policies - help.coreview.com/en_US/out-of-the-box-playbook-library/playbooks-out-of-the-box-security-and-identity
- 9.CoreView Knowledge Center: Device playbook policies (Intune) - help.coreview.com/en_US/out-of-the-box-playbook-library/playbooks-out-of-the-box-device-management
- 10.CoreView Knowledge Center: SharePoint and OneDrive playbook policies (sensitivity label condition) - help.coreview.com/en_US/out-of-the-box-playbook-library/playbooks-out-of-the-box-sharepoint-onedrive-management-policies
- 11.CoreView Knowledge Center: Control for SharePoint overview - help.coreview.com/en_US/coreview-control-for-sharepoint-overview
- 12.CoreView Knowledge Center: how the Control for SharePoint import works (priority waves, daily capacity) - help.coreview.com/how-coreview-control-for-sharepoint-import-works
- 13.CoreView Knowledge Center: Control for SharePoint policies - help.coreview.com/en_US/coreview-control-for-sharepoint-policies
- 14.CoreView Knowledge Center: Virtual Tenants introduction - help.coreview.com/en_US/vtenant-get-started/virtual-tenants-introduction
- 15.CoreView Knowledge Center: introducing Configuration Manager (backup, drift, one-year retention) - help.coreview.com/en_US/configuration-manager-saas-get-started/introducing-configuration-manager-saas
- 16.CoreView Knowledge Center: Security Dashboard (CIS M365 Foundations 6.0.1 baseline) - help.coreview.com/en_US/security-dashboard/security-dashboard-security-dashboard
- 17.CoreView Knowledge Center: Copilot capabilities in CoreView - help.coreview.com/en_US/copilot-capabilities-in-coreview
- 18.CoreView Knowledge Center: Entra app playbook policies - help.coreview.com/en_US/out-of-the-box-playbook-library/playbooks-out-of-the-box-application-management
- 19.CoreView Knowledge Center: run a Workflow via API (public API scope) - help.coreview.com/en_US/schedule-and-run-workflows/run-a-workflow-via-api
- 20.CoreView Knowledge Center: Audit-log SIEM integration - help.coreview.com/en_US/coreview-audit-log-siem-integration
- 21.CoreView security page (hosting regions, encryption) - www.coreview.com/security
- 22.Microsoft 365 App Certification record for CoreView (data stored, storage locations) - learn.microsoft.com/en-us/microsoft-365-app-certification/saas/coreview-srl-officemicrosoft-365-managementautomation
- 23.CoreView Control for SharePoint product page (typical customer size) - www.coreview.com/sharepoint-security
- 24.CoreView product tour (management actions and policies counts) - www.coreview.com/product-tour
- 25.CoreView release notes October 2026 (Configuration Resilience launch, add-on renames) - help.coreview.com/en_US/2026-release-notes/coreview-release-notes-october-2026
- 26.CoreView release notes June 2026 (Control for SharePoint launch) - help.coreview.com/en_US/2026-release-notes/coreview-release-notes-june-2026
- 27.CoreView Knowledge Center: Identity Resilience overview (30-day rewind) - help.coreview.com/en_US/identity-resilience/identity-resilience-overview
- 28.CoreView Knowledge Center: Access Reviews overview - help.coreview.com/en_US/access-reviews/access-reviews-overview
CoreView is a trademark of its owner. This comparison was written by 1Security from public documentation and was not reviewed by CoreView. If a row is out of date, write to us and we will fix it.
Richer answers
Beyond the gaps: the same questions, answered deeper and sooner.
Where both tools have a feature, the difference is how far the answer goes and how long it takes to arrive. A review that waits for a daily import and an item-level wave is a different review from one that reads the current graph.
Who has access, and why
One graph across every path: direct permissions, sharing links, group membership, site roles, inheritance, apps, agents and guests. Every external organisation that touches your tenant resolved to a real company and reconciled with your trusted-domain settings, without waiting for an import wave.
Remediation under control
More than 40 actions on users, sites, files, apps, licences, devices, agents and messages. Each one is staged in a review queue with a grace period, can be reverted, and is read back from Microsoft to prove the change landed. CoreView keeps the workflows; 1Security adds the actions a security finding needs.
Compliance without manual mapping
Eleven frameworks today, more arriving: GDPR, NIS2, DORA, the EU AI Act, ISO 27001 and 42001, SOC 2, NIST CSF, HIPAA and the Polish KSC and KRiBSI acts. A CIS baseline tells you how the tenant is configured; the evidence pack tells the auditor what actually happened in it, weekly and dated.
AI agents and Copilot
Not a licence report: what each agent can actually read across files, sites, users and email, who deployed it, what it did, and when it broke its own pattern. Copilot readiness with a fix list and a per-site indexing block, so the rollout starts from a clean reach.
The rest of the tenant
Beyond the comparison: the whole Microsoft 365 stack, from one read-only connection.
The table covers what a CoreView buyer asks about. The same connection opens every screen below on day one, each answering a question your tenant cannot answer about itself today.
- Microsoft 365 Alerts ToolOne alert model across policies, activity and anomalies - with the evidence attached and the alert threshold in your hands.
- Microsoft 365 Monitoring ToolReal-time monitoring that catches a mass download while it is unfolding - across users, files, apps, AI agents and devices.
- Copilot Security ToolEvery AI agent's real blast radius - quantified before rollout, watched and constrained after.
- Shadow Device DetectionEvery device touching your data, reconstructed from real activity - including the machines that never enrolled anywhere.
- Impossible Travel DetectionLocations as identities, not IPs: country, city and network for every action, first-seen origins, travel timelines with verdicts - no E5, no P2.
- Conditional Access MonitoringDeclared Conditional Access compared against observed sign-ins: coverage verdicts, ungoverned traffic share, and the ranges your offices outgrew.
- Office 365 Access ManagementEffective access, resolved - who can reach what, through which grant, and one place to take it away.
- SharePoint Governance ToolEvery site ranked by exposure and abandonment - links, guests and Copilot access under control.
- Office 365 User ProvisioningLifecycle access from day one to offboarding - reach, dormant accounts and license reclaim in one flow.
- Microsoft 365 Audit ToolUp to three years of searchable activity history - every action tied to an actor, device and location.
- Microsoft 365 Inventory ToolEight live inventories on one permission graph - including the sites, devices and AI agents that were never registered anywhere.
- Office 365 ReportingAnswers, not exports - regulator-grade numbers, saved views and a read-only API for your SOC.
- Microsoft 365 File PermissionsWho has access to any file, and why - people, links, apps and AI agents on one map, with the fix in the same place.
- Sensitive Data DiscoveryWhere regulated data lives and everything that can reach it - two detection engines, no premium licence required.
- Office 365 Email MonitoringOutbound sensitive content, delegated-send abuse and whole-thread evidence that survives deletion.
- Purview Label CoverageWhat your sensitivity labels actually cover, and which of them protect anything at all.
- AI Agent InventoryEvery agent in the tenant with its real reach counted, its blueprint reviewed, and guardrails you can verify.
- AI Data RestrictionDeclare a data type off-limits to AI and every agent, app and user still reaching it becomes a live violation - recorded for the auditor.
- AI Spend TrackingInteractions, Copilot credits and Azure tokens in one ledger per agent - with the spend column next to what each agent can reach.
- Microsoft 365 User Access ReviewEvery identity with what it can reach, what it did, and whether it should still exist - including SharePoint-only guests that live outside the directory.
- Group Access AnalysisWhat membership in a group actually unlocks - nesting resolved, external members surfaced, blast radius counted.
- App and OAuth Consent GovernanceEvery app with a foothold in the tenant: how it got in, who let it in, and what it can actually read.
- Remediation AutomationFindings become fixes at tenant scale, counted before you enable them and staged behind a review window.
- Microsoft 365 Licence OptimizationThe seats you pay for and nobody uses - unassigned units, licences on guests, and dormant accounts still billing.
- Microsoft 365 Anomaly DetectionEvery policy, user, app and agent measured against its own baseline - with an alert line you move and see the answer to at once.
- Office 365 Sign-in LocationsEvery place your tenant is reached from, with your Conditional Access configuration laid over observed reality.
- Microsoft 365 Unified Audit LogWho did what, when, from where and on which device - retained up to three years on a standard licence.
- SharePoint Site InventoryEvery site, channel site and OneDrive in one list, ranked by external reach, abandonment and what Copilot can read.
- Microsoft 365 Activity AnalyticsThe extremes rather than the averages - a mass download inside the hour, and everything nobody has touched in a year.
- Microsoft 365 Trend TrackingAny number in the tenant followed over time, with the change and the deviation attached - and alerting on the same object.
- Microsoft 365 Compliance MonitoringReadiness for eleven regulations measured from live tenant data - with weekly snapshots and a dated evidence pack per framework.
- Microsoft 365 Security ScoreMicrosoft Secure Score beside the score measured from what actually happens - one worklist ranked by points still on the table.
- External Domain MonitoringEvery organisation your tenant exchanges data with, resolved to a real company - with drift flags and an enforceable verdict per domain.
- All featuresEvery screen in one list
Fits what you run
Native to Microsoft 365, open to the rest of your stack.
Every action runs through Microsoft Graph, roles sync from Entra, setup takes minutes, and the platform stays read-only until you decide to enable writes. There is no agent to install, no service account to keep alive and no mailbox to re-route.
A public REST API and an MCP server expose logs, detections, alerts, users and compliance status, so your SIEM, SOC or MSSP receives events that already carry the user, the file, the device, the location and who could reach what, instead of raw audit rows.
Run it as SaaS, in your own Azure subscription with our container images, or on-premise, air-gapped if needed. Each tenant gets its own database, and disconnecting removes the data within seven days.
Savings, last and measured
It runs on the licences you already have, and finds the ones you do not use.
CoreView already reclaims unused seats well. 1Security needs no premium Microsoft plan for the rest: content scanning without E5 or Purview, locations without premium sign-in logs, three years of history without a SIEM contract. On top of that it ranks what you pay for and nobody uses, licences on guests, dead apps, orphaned sites and mailboxes, each with its idle time and a reclaim action waiting in the review queue.
- Business Basicthe plan most features run on
- 3 yearsof activity history without a SIEM contract
- 0E5 or Purview add-ons needed for content scanning
- 1 queueunused licences, dead apps, orphaned sites and mailboxes, reclaimed from one place
Keep both or switch
You do not have to choose on day one.
If your team runs CoreView for delegated administration, configuration baselines, licence pools and workflows, keep it. 1Security takes the data side: who can reach what, what left and from where, agents, anomalies, compliance evidence. The two never fight over the same setting: 1Security is read-only until you enable actions, and even then each action waits in a review queue with a grace period. Many customers run both for a year and then decide which one they still open.
The free proof of concept runs side by side on your own tenant: read-only consent in the morning, first findings the same day on a small tenant, and one meeting to compare what each tool showed.
What the side-by-side POC compares
- Sensitive data that carries no label and is reachable by guests or Anyone links
- Who can reach the ten most sensitive sites, and who actually opened them
- Unknown devices and locations in the last 90 days
- AI agents and apps, and what each can reach
- Anomalies on users, apps and agents over 90 days
- Licences, apps, sites and mailboxes you pay for and nobody uses
FAQ
Questions buyers ask when they already run CoreView.
Do I have to remove CoreView to use 1Security?
No. 1Security reads your tenant through its own Entra app with read-only consent and changes nothing until you enable actions. CoreView keeps working as before. Teams that keep both leave delegated administration, configuration baselines, licence pools and workflows with CoreView and move incidents, sensitive data, agents and compliance evidence to 1Security.
Which Microsoft licence do I need?
Nearly everything works on Business Basic, Office 365 E1 or Microsoft 365 E3. Content scanning, locations and three-year history need no premium plan. The few features that read premium Microsoft data, such as Purview detections or per-sign-in detail, are listed on the requirements page with what you get without them, and the free licence checker tells you before you connect.
Does 1Security store my file or email content?
No. Content is streamed into the sensitivity scan and discarded when it finishes. What persists is the detection type, the match count and a confidence bucket linked to the file, never the matched values. The data handling page lists exactly what is read and what is stored.
Can the data stay in my own cloud?
Yes. Besides SaaS you can run 1Security in your own Azure subscription from our container images, or on-premise. Each tenant gets its own database in every model, and there is no minimum user count for self-hosting.
We already stream CoreView into our SIEM. What does 1Security add?
A different feed. CoreView’s SIEM Connector carries the activity of CoreView operators. 1Security’s REST API and MCP server carry what happened in the tenant: logs, detections, alerts, security alerts, users, compliance status and Copilot readiness, each event already enriched with the user, the file, the device, the location and who could reach what. Scoped API keys per tenant or organisation-wide for MSSPs; Sentinel and Splunk pairings are described on their own pages.
How do you know what CoreView does and does not do?
From CoreView's public Knowledge Center, pricing page and release notes, and from Microsoft's app certification record, each linked under the table with the date we last checked. CoreView ships monthly and renamed several add-ons in October 2026, so if something has changed or we got a row wrong, tell us and we will correct it.
What does the free POC include, and how long does it take?
A read-only connection to your tenant, a full scan, and a comparison meeting. A small tenant shows first results within one to two hours; a tenant with around a million files takes six to twelve hours for the first full map. Nothing is changed in your tenant during the POC, and CoreView is not touched.
See both on your own tenant.
Book a demo, then a free side-by-side proof of concept next to CoreView. Read-only consent, first findings the same day, nothing changed in your tenant.
Or keep twelve months of audit log and hope the incident is recent enough for the portal.