Petra Security

Petra Security Today’s cyberattacks hit your M365. Petra is best-in-class to detect & stop BECs, Token Theft, and other M365 threats.

Allowlists rely on a faulty assumption: activity from an unusual location is likely an attack.Remote work and frequent t...
06/30/2025

Allowlists rely on a faulty assumption: activity from an unusual location is likely an attack.

Remote work and frequent travel makes it hard to say “someone shouldn’t be in this location”.

Instead of treating unusual location as a silver bullet to detect attacks, you should treat it as one signal among many.

Read our newest research →

“Only allow log‑ins from known places” sounds great, but falls apart in practice.

Attackers are leveraging Microsoft's infrastructure to get through email security.Here's a case of attackers hiding phis...
05/30/2025

Attackers are leveraging Microsoft's infrastructure to get through email security.

Here's a case of attackers hiding phishing lures in OneDrive files that matched the company’s usual format ("abc.one" and "abc.onetoc2").

Everything looked normal, so it slipped through email security.

So how do you catch a phish that comes from Microsoft's apps?

Check out our deep dive: https://petrasecurity.substack.com/p/compromised-then-weaponized-anatomy

What it looks like when a compromised M365 account is used to send out OneDrive phishing lures to tons of other victims.

We're now on Facebook!If you're an MSP and deal with Microsoft compromises, you'll love our research:
05/28/2025

We're now on Facebook!

If you're an MSP and deal with Microsoft compromises, you'll love our research:

Catching an attacker red-handed across event streams—from a OneDrive phishing lure to an automated AitM toolkit in action.

We're co-sponsoring the MSP Community Block Party at Rewst's FLOW 2025 with The MSP Initiative!
05/28/2025

We're co-sponsoring the MSP Community Block Party at Rewst's FLOW 2025 with The MSP Initiative!

Summer is almost here, and we can't wait to kick off the season with the MSP Community Block Party in Tampa at Rewst's FLOW 2025! 🎉🌴🍹

Mark your calendars for June 25th and get ready for a night you won't forget with your favorite channel friends. Delicious food, cold drinks, photobooths, music, and much more fun is waiting for you at Harpoon Harry's Crab House, just a quick walk from the FLOW venue. We hope to see you there!

MSPS, register here today to skip the line the night of 👉🏼 https://hubs.ly/Q03nZ7fW0

FLOW vendors, register here 👉🏼 https://hubs.ly/Q03nZ7Ls0

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