#outlook.


Microsoft Outlook to block MSIX attachments starting November

Oct 7, 2026 // 18:56

Microsoft announced that it will add .msix and .msixbundle attachments to the list of blocked attachments in Outlook Web and the new Outlook Windows client […]

Antino Backdoor Uses Outlook and OneDrive for C2 in China-Nexus Espionage Campaign

Oct 2, 2026 // 23:15

Government and policy organizations across Asia have become the target of a new campaign orchestrated by a China-nexus threat actor. The activity, which has targeted […]

Hackers Spied on a Stock Exchange Executive’s Outlook Mailbox for Five Months

Jun 4, 2026 // 14:26

Unknown attackers spent at least five months inside the Outlook mailbox of a senior executive at a major global stock exchange, copying the inbox out […]

TCLBANKER Banking Trojan Targets Financial Platforms via WhatsApp and Outlook Worms

May 9, 2026 // 00:36

Threat hunters have flagged a previously undocumented Brazilian banking trojan dubbed TCLBANKER that’s capable of targeting 59 banking, fintech, and cryptocurrency platforms. The activity is […]

New TCLBanker malware self-spreads over WhatsApp and Outlook

May 8, 2026 // 01:16

A new trojan named TCLBanker, which targets 59 banking, fintech, and cryptocurrency platforms, uses a trojanized MSI installer for Logitech AI Prompt Builder to infect […]

New GopherWhisper APT group abuses Outlook, Slack, Discord for comms

Apr 23, 2026 // 15:37

A previously undocumented state-backed threat actor named GopherWhisper is using a Go-based custom toolkit and legitimate services like Microsoft 365 Outlook, Slack, and Discord in […]

Microsoft investigates disappearing mouse pointer bug in classic Outlook.

Feb 23, 2026 // 23:43

Microsoft has officially acknowledged a bug in classic Outlook for Windows where the mouse pointer disappears when hovering over the application interface. While the pointer is […]