Signal
Mailbox Rule Abuse Emerges as Stealthy Post-Compromise Threat
Evidence first: scan the strongest sources, then decide whether to go deeper.
Published 2026-04-13 15:00 UTCUpdated 2026-04-13 19:11 UTC
rss
mailbox_rule_abuse
Source links open
Source links and full evidence are open here. Archive history, compare-over-time, alerts, exports, API, integrations, and workflow are paid.
No card needed for the free brief.
Evidence trail (top sources)
top sources (2 domains)domains are deduped. counts indicate coverage, not truth.2 top sources shown
limited source diversity in top sources
Overview
Attackers are abusing Microsoft 365 mailbox rules to hide activity, exfiltrate data and retain access after account compromise, researchers warn.
Score total
0.87
Momentum 24h
2
Posts
2
Origins
2
Source types
1
Duplicate ratio
0%
All evidence
All evidence
Microsoft 365 mailbox rules abused for exfiltration, persistence
SC Media · scworld.com · 2026-04-13 19:11 UTC
Mailbox Rule Abuse Emerges as Stealthy Post-Compromise Threat
Infosecurity Magazine · infosecurity-magazine.com · 2026-04-13 15:00 UTC
Show filters & breakdown
Posts loaded: 0Publishers: 2Origin domains: 2Duplicates: -
Showing 2 / 0
Top publishers (this list)
- SC Media (1)
- Infosecurity Magazine (1)
Top origin domains (this list)
- scworld.com (1)
- infosecurity-magazine.com (1)