In 2023, malicious cyber actors exploited more zero-day vulnerabilities to compromise enterprise networks compared to 2022, allowing them to conduct cyber operations against higher-priority targets.
In 2023, the majority of the most frequently exploited vulnerabilities were initially exploited as a zero-day, which is an increase from 2022, when less than half of the top exploited vulnerabilities were exploited as a zero-day. Malicious cyber actors continue to have the most success exploiting vulnerabilities within two years after public disclosure of the vulnerability. The utility of these vulnerabilities declines over time as more systems are patched or replaced. Malicious cyber actors find less utility from zero-day exploits when international cybersecurity efforts reduce the lifespan of zero-day vulnerabilities.
Read more…
Source: U.S. Federal Bureau of Investigation Cyber Division
Related:
- Russian government hackers said to be behind US federal court filing system hack
August 12, 2025
The Russian government is allegedly behind the data breach affecting the U.S. court filing system known as PACER, according to The New York Times. Citing anonymous sources, the newspaper said Russia “is at least in part responsible” for the cyberattack, without saying what part of the Russian government is behind the hack. The hackers searched for ...
- WestJet says some passengers’ personal information stolen in cyberattack
August 11, 2025
WestJet says some personal data including information about travel documents such as passports was stolen in a cyberattack earlier this year, but credit and debit card numbers as well as user passwords were not compromised. In a note to customers, WestJet says the personal information taken varies from person to person but may include name, date ...
- From ClickFix to Command: A Full PowerShell Attack Chain
August 11, 2025
The FortiMail Workspace Security team recently identified a targeted intrusion campaign impacting multiple Israeli organizations. The adversary leveraged compromised internal email infrastructure to distribute phishing messages across the regional business landscape. These emails initiated a multi-stage, PowerShell-based infection chain that culminated in the delivery of a remote access trojan (RAT), executed entirely through PowerShell. Read more… Source: Fortinet Sign ...
- University of Western Australia suffers major data breach, staff and students locked out
August 11, 2025
One of Australia’s major universities has suffered a data breach, with the password information of thousands of staff and students exposed. The University of WA (UWA) confirmed it was investigating a cybersecurity incident on Saturday night, which involved unauthorised access of password information. Read more… Source: MSN Ness Sign up for the Cyber Security Review Newsletter The latest cyber security ...
- Security flaws in a carmaker’s web portal let one hacker remotely unlock cars from anywhere
August 10, 2025
A security researcher said flaws in a carmaker’s online dealership portal exposed the private information and vehicle data of its customers, and could have allowed hackers to remotely break into any of its customers’ vehicles. Eaton Zveare, who works as a security researcher at software delivery company Harness, told TechCrunch the flaw he discovered allowed the ...
- Massive leak of over 115 million US payment cards caused by Chinese “smishing” hackers
August 10, 2025
A wave of advanced phishing campaigns, traced to Chinese-speaking cybercriminal syndicates, may have compromised up to 115 million US payment cards in just over a year, experts have warned. Researchers at SecAlliance revealed these operations represent a growing convergence of social engineering, real-time authentication bypasses, and phishing infrastructure designed to scale. Investigators have identified a figure ...