Windows 11 continues to surprise its users. The latest April 2025 cumulative update—KB5055523—has introduced an unexpected twist: the creation of an empty "inetpub" folder in the root of the C: drive, even on systems where Internet Information Services (IIS) is not installed. While the folder’s...
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Fast flux represents one of the more elusive and dangerous tactics in the cyber threat landscape—an ever-shifting target that challenges traditional defenses and tests the resilience of network security. In today’s interconnected world, fast flux techniques have emerged as critical...
Original release date: October 22, 2020
Summary
The Cybersecurity and Infrastructure Security Agency (CISA) and the Federal Bureau of Investigation (FBI) are warning that Iranian advanced persistent threat (APT) actors are likely intent on influencing and interfering with the U.S. elections to...
Original release date: July 1, 2020 | Last revised: July 2, 2020
Summary
This advisory uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK®) and Pre-ATT&CK framework. See the ATT&CK for Enterprise and Pre-ATT&CK frameworks for referenced threat actor techniques.
This...
Original release date: April 8, 2020
Summary
This is a joint alert from the United States Department of Homeland Security (DHS) Cybersecurity and Infrastructure Security Agency (CISA) and the United Kingdom’s National Cyber Security Centre (NCSC).
This alert provides information on...
Original release date: March 27, 2018
Systems Affected
Networked systems
Overview
According to information derived from FBI investigations, malicious cyber actors are increasingly using a style of brute force attack known as password spraying against organizations in the United States and...