Microsoft is looking into a problem with Outlook security alerts when trying to open .ICS calendar files after installing December 2023 Patch Tuesday Office security updates.

By infosecbulletin
/ Tuesday , August 4 2026
TP-Link has shared a security warning about a serious problem with its TL-WR940N V6 wireless router. This problem, known as...
Read More
By infosecbulletin
/ Monday , August 3 2026
A cyberattack on the U.K.'s Police National Legal Database (PNLD) has put the contact information of over 100,000 police officers...
Read More
By infosecbulletin
/ Saturday , August 1 2026
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) warns of a big rise in attacks on internet-connected programmable logic controllers...
Read More
By infosecbulletin
/ Friday , July 31 2026
A new open-source project named CyberStrike aims to be the first AI tool made for offensive security. It can turn...
Read More
By infosecbulletin
/ Friday , July 31 2026
Many countries are now showing interest to invest in the data center industry in Banglades especially in AI data centers....
Read More
By infosecbulletin
/ Thursday , July 30 2026
NVIDIA has revealed a big flaw with its BlueField DPUs and ConnectX networking systems. This issue could let attackers run...
Read More
By infosecbulletin
/ Wednesday , July 29 2026
India's leading state-owned lender Bank of Baroda acknowledged Monday a security incident after reports that approximately 1 terabyte of customer...
Read More
By infosecbulletin
/ Tuesday , July 28 2026
CISA has put the Fortinet FortiOS vulnerability CVE-2025-68686 in its list of known exploited flaws after ongoing attacks. The flaw...
Read More
By infosecbulletin
/ Tuesday , July 28 2026
OpenAI's CEO Sam Altman says that AI has reached a big milestone. The technology can now make itself better, leading...
Read More
By infosecbulletin
/ Tuesday , July 28 2026
ShinyHunters has publicly claimed responsibility for the Ernst & Young (EY) data breach. The group posted a message on their...
Read More
Microsoft 365 users report a problem that they receive warning messages when they try to open locally saved ICS files. The messages indicate a possible security risk.
“This behavior is not expected when opening .ICS files. This is a bug and will be addressed in a future update,” Microsoft explains in this support document.
The company announced that a security warning will appear after installing an update that fixes the CVE-2023-35636 Microsoft Outlook information disclosure vulnerability.
If not fixed, the security flaw can be used by attackers to trick users of unpatched Outlook into opening files to steal Windows credentials.
Attackers can later use the compromised user’s authentication to gain access to sensitive data or spread throughout the network.