https://channellife.in/story/proofpoint-flags-mailbox-rule-abuse-in-microsoft-365
Proofpoint flags mailbox rule abuse in Microsoft 365
Malicious rules are helping hackers hide in Microsoft 365 inboxes, with Proofpoint saying it saw the tactic in 10% of taken-over accounts.
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https://law.pepperdine.edu/law-review/volume-2023/proceeding-pro-se.htm
Proceeding Pro Se: Misguided Limitations on the Prison Mailbox Rule in Cretacci v. Call |...
Proceeding Pro Se: Misguided Limitations on the Prison Mailbox Rule in Cretacci v. Call
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https://legalclarity.org/what-is-the-mailbox-rule-for-irs-filings/
What Is the Mailbox Rule for IRS Filings? - LegalClarity
Dec 5, 2025 - Understand the legal requirements for timely IRS tax filing using the Mailbox Rule (IRC 7502), including proof and key exceptions.
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https://www.prisonlegalnews.org/news/1998/jan/15/mailbox-rule-applies-to-trust-fund-statement/
Mailbox Rule Applies to Trust Fund Statement | Prison Legal News
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https://www.infosecurity-magazine.com/news/mailbox-rule-abuse-stealthy-post/
Mailbox Rule Abuse Emerges as Stealthy Post-Compromise Threat - Infosecurity Magazine
Apr 13, 2026 - Attackers are abusing Microsoft 365 mailbox rules to hide activity, exfiltrate data and retain access after account compromise, researchers warn
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https://www.teachucomp.com/tag/create-a-mailbox-rule-in-outlook/
Create a Mailbox Rule in Outlook Archives - TeachUcomp, Inc.
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https://www.stigqter.com/stigs/SV-228381r612748_rule.html
STIGQter: STIG Check Details: SV-228381r612748_rule: Exchange Mailbox Stores must mount at startup.
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