AvePoint Cloud Backup for Microsoft 365 India: a Hyderabad SaaS Tuesday recovery
AvePoint Cloud Backup for Microsoft 365 india: a Hyderabad SaaS Tuesday recovery
The CTO called at 09:14 IST. “Karthik, four sites are showing up in OneDrive as .aep on every file.” I asked him to pause tenant writes and pull the 96-hour audit log. He had already done both. This is what AvePoint Cloud Backup for Microsoft 365 india looks like on the bad Tuesday.
The company is a 320-seat B2B SaaS in Madhapur. M365 E3 across the org, E5 Compliance on the senior 40. Six weeks earlier we had deployed AvePoint Cloud Backup for Microsoft 365 behind native retention because the auditor had said “recovery”. We have seen this OAuth class of incident three times this quarter; I think the configuration story matters more than the product story.
09:14 to 10:30 IST : the OAuth audit log, and what it told us
The CTO sent the M365 unified audit log filtered to Consent to application. The line that mattered was timestamped Sunday 22:47 IST. The “Director, Brand” had approved an OAuth app called SmartFolder Analytics that requested Sites.ReadWrite.All and Files.ReadWrite.All at tenant scope. She had clicked through on her phone after a vendor reached her on LinkedIn that evening. By Monday morning the app had a token for nine days of unattended file rewrite.
The attacker waited 38 hours, then began re-writing files in 200-file batches at 30-minute intervals on Tuesday 08:42 IST. By 09:14 IST the four sites the Director could write to were halfway through the encryption pass.
One question before we touched anything else: “Was the AvePoint ransomware-pattern alert wired to PagerDuty or just to email?” He pulled up the AvePoint console. The alert had fired at 08:51 IST. It went to a distribution list nobody read on Tuesday mornings. Achha. Bas. The clock had been ticking for 23 minutes before the CTO saw the first .aep in OneDrive.
10:30 to 12:45 IST : kill the token, freeze the tenant, scope the damage
Three actions, in order. Revoke the OAuth grant from Entra ID Enterprise Applications. Force sign-out the user’s session. Open AvePoint Cloud Backup and run a scoped restore preview against the four affected sites. The preview numbers were not what we expected.
- Marketing site: 12,438 files modified. 11,610 were within AvePoint’s incremental hourly backup window. 828 were not, because the site had a one-off folder added 14 days earlier under a non-default policy that nobody had re-scoped.
- Sales-Ops site: 7,201 files modified. All 7,201 inside backup scope.
- Product-Docs site: 23,419 files modified. All inside scope, plus 4 GB of attached metadata.
- SDR shared site: 1,802 files modified. 1,802 inside scope.
The 828 orphan files were the problem. AvePoint was configured on deploy to mirror default SharePoint plus any Teams-provisioned site. The Marketing folder had been added by the Director through a third-party connector that did not register the site in the Teams provisioning flow. AvePoint did not know it existed. M365 native retention did, with a 30-day version history. The attacker had been working on her side of the tenant for nine days. The math is uncomfortable. The CTO logged AvePoint Opus as a sprint action item.
12:45 to 17:20 IST : granular vs full-site restore, and why we picked granular
Here is where the AvePoint product earned its rupee. The IT-head wanted four full-site restores from the Monday 23:00 IST snapshot, because that was the fastest console operation. Full-site restore brings every file back to Monday 23:00 IST. Anything written between 23:00 Monday and 08:42 Tuesday is lost. For Marketing that was 14 hours of legitimate edits including a campaign brief the Director had spent her Monday evening on. The same Director who had clicked the consent screen, yaar.
Granular item-level restore in AvePoint Cloud Backup selects only files whose modified-by stamp matches the attacker’s service principal, and rolls those back. The legitimate Monday-evening edits stay. The cost is a longer restore queue and higher console-operator workload during the run. We ran the math on the conference-room whiteboard.
| Restore approach | Time to first file accessible | Writer downtime | Legit edits lost | Console operator load |
|---|---|---|---|---|
| Full-site restore, 4 sites in parallel | ~32 minutes | ~2 hours per writer | 14 hours of Monday-evening Marketing work + ~6 hours of Sales-Ops Monday-late edits | 1 console op, mostly waiting |
| Granular item-level restore, attacker-scoped | ~58 minutes | ~6 hours per writer for two sites; ~2 hours for two sites | 0 (only attacker-touched files roll back) | 2 console ops, full attention |
| Hybrid: full-site for SDR + Sales-Ops, granular for Marketing + Product-Docs | ~48 minutes for the two full-site; ~58 for the two granular | ~3 hours weighted average | ~6 hours of Sales-Ops Monday-late edits only | 2 console ops |
The CTO picked the hybrid. The two larger sites got the attacker-scoped granular pass. I walked into the morning convinced we would do four full-site restores and be back to writing by lunch. The whiteboard talked me out of it. The product can do both, after all. The question is which loss your writers can absorb. That is an editorial calendar question, not a backup question.
AvePoint Cloud Backup for Microsoft 365 india: the 828 orphan files, and what we paid for them
By 17:20 IST the four sites were restoring cleanly. The CTO asked about the 828 files AvePoint did not have. M365 native version history had them at 8 to 9 days deep, within the 30-day window but only just. If the attacker had held the token for 23 days instead of 9, those files would have been gone.
A small PowerShell script against the Graph API bulk-restored the prior version of each file in 41 minutes. The lesson is straightforward: put every SharePoint site under AvePoint scope on day one of provisioning, not day 14 of remembering.
20:40 to 23:48 IST : the OAuth consent policy, and the thing we should have configured six weeks ago
Restores finished by 20:40 IST. Director, Brand sat with the CTO at 21:00. She needed three things: a written record the click was unintentional, a clear policy for consent screens on her phone (none), and a sense her Monday evening work had not been lost. She got all three.
From 21:30 IST we tightened the tenant. Microsoft’s recommendation is to set user consent for applications to “Allow user consent for apps from verified publishers, for selected permissions” and route everything else through admin consent. We did that. We also moved the AvePoint ransomware-pattern alert from the email DL to the IT-head’s PagerDuty roster, alongside Microsoft’s application-trust playbook for Entra-fronted apps and the M365 ransomware recovery checklist.
At 23:48 IST the CTO closed the bridge. Two WhatsApp messages: “thanks”, and “next time we are buying Opus from day one”.
What we would do differently if Tuesday happened again
Three things, in priority order. None are backup-product choices. The backup product was correct. The configuration around it was not.
- Pre-stage AvePoint Opus on day one. Opus auto-discovers SharePoint sites created through any provisioning path and prompts admins to extend backup scope. Six weeks ago it would have caught the Marketing connector site within a day.
- Wire AvePoint alerts to PagerDuty, not email. The escalation around the detection has to assume nobody reads the distribution list at 08:51 on a Tuesday.
- Set tenant-wide OAuth consent policy before anything else. Costs nothing, prevents the entire class of attack. Not configuring it ran 14 hours and 34 minutes.
The trade-off not in the slide deck: AvePoint’s per-user-per-month price sits above M365’s “free” native retention. The question is whether your auditor will accept “we use native retention” for sites you cannot prove are inside the 30-day window. Native retention is a clock you cannot reset. AvePoint is a clock you can configure.
What this story has in common with two other recoveries we ran this quarter
This is the third M365 estate we have recovered this quarter from an OAuth-driven incident. The pattern across all three: human-side consent error, machine-side OAuth scope, recovery clock measured in single-digit days. One of those, a Pune NBFC where the attacker was after credentialed identity, we wrote up here. The Veeam version from a Bengaluru SaaS CTO and the broader Acronis bake-off a Coimbatore manufacturer ran sit alongside this. AvePoint earns its place when the estate is M365-native and the operator wants granular item-level restore inside one console.
For DPDP context, the MeitY DPDP framework treats recoverability as a fiduciary control. See also the DPDP readiness checklist and email data leak prevention playbooks.
Key takeaways
- OAuth consent on M365 is the under-priced attack surface of 2026. One Sunday-evening phone click ran a 14-hour Tuesday recovery.
- AvePoint Cloud Backup for Microsoft 365 india gave us granular item-level restore against the attacker’s service principal. That preserved 14 hours of legitimate Monday-evening writer work that a full-site restore would have lost.
- Configuration matters more than product choice. The scope-drift that left 828 files outside backup scope was a Day-14 provisioning oversight, not an AvePoint feature gap.
- Wire ransomware-pattern alerts to PagerDuty or your equivalent paging tool. The email distribution list will fail you at 08:51 on a Tuesday.
- Set tenant-wide OAuth consent policy. This is a free configuration switch with a 14-hour incident on the wrong side of it.
FAQ
Q. Does AvePoint Cloud Backup for Microsoft 365 cover SharePoint sites created outside the Teams provisioning flow?
A. Only if scope is set to discover them. Sites created through third-party connectors need either an explicit policy extension or AvePoint Opus auto-discovery. Configure this on day one, not day 14.
Q. How long does a granular item-level restore take for a 23,000-file SharePoint site?
A. About 4 hours of console-operator time end to end. First files accessible inside 58 minutes. Full-site restore would have been about 32 minutes, at the cost of 14 hours of legitimate writer edits lost.
Q. Is M365 native retention enough for DPDP recoverability?
A. Not on its own, for sites you cannot prove are inside the 30-day version window. Pair native retention with a configured AvePoint scope and a tested restore drill.
Q. What did the recovery cost the Hyderabad team?
A. Engineering time was INR 4.8 lakh across two senior engineers for 14 hours each. AvePoint Cloud Backup was already on their P&L at INR 480 per user per month for 320 seats. Writer-team downtime preserved by the hybrid restore was valued at roughly INR 7.2 lakh of avoided campaign-deadline slip.
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P.S. Sudeep here. Karthik wrote this up because three other Indian CTOs called us in the week after asking what we actually did on that Tuesday. The honest answer is that the recovery was the easy part. The hard part was the Sunday-evening phone click that started the clock. If you have not put your M365 OAuth consent policy through a quarterly review, that is your next free hour. Reply on WhatsApp at +91 91375 93228 and we will book the readiness check.