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:
- Stolen Canvas data was “returned” after hacker agreement, Instructure says
May 12, 2026
The Instructure/Canvas data breach that has dominated cybersecurity coverage recently has reached a new stage. Millions of students had personal data stolen, with extortion group ShinyHunters claiming credit for the data breach and applying extra pressure for their ransom demands by bothering Canvas users directly. Which seems to have paid off. On the Instructure web page about the recent ...
- Cache-poisoning caper turns TanStack npm packages toxic
May 12, 2026
An attacker has published 84 malicious versions of official TanStack npm packages, with the impact including credential theft, self-propagation, and complete disk wipe of an infected host. The attack is part of a wave of attacks across npm and PyPI, continuing the Mini Shai-Hulud campaign. Supply chain security company Socket reports that other compromised packages include the OpenSearch client, Mistral ...
- Inside AD CS Escalation: Unpacking Advanced Misuse Techniques and Tools
May 11, 2026
Active Directory Certificate Services (AD CS) is a foundational component of Windows enterprise infrastructure, responsible for managing public key infrastructure (PKI) and issuing certificates that enable authentication and encryption across networks. Despite its critical role in the enterprise identity infrastructure, AD CS is often undermined by insecure default configurations and design complexities, resulting in exploitable ...
- Yarbo responds to robot flaws that could mow down their owners
May 11, 2026
A researcher found that Yarbo yard robots came with a host of vulnerabilities which, among others, allowed an attacker to harvest WiFi passwords. Security researcher Andreas Makris found he could remotely hijack thousands of Yarbo yard robots worldwide, and proved it by having his mower run him over. The root cause was a cluster of “legacy” design choices: ...
- Vibe Hacking: Two AI-Augmented Campaigns Target Government and Financial Sectors in Latin America
May 11, 2026
Threat actors using AI is an unsurprising and even long-predicted developmentopen on a new tab. In a case in point, TrendAI™ Research has identified two emerging threat campaigns that used agentic AI to drive intrusion operations against government entities and financial organizations across several countries in Latin America. Though evidence suggests that the two groups are likely ...
- Water company’s leaky security earns near-£1M fine
May 11, 2026
The UK’s data protection watchdog has fined South Staffordshire Water’s parent company nearly £1 million over security failings exposed by the Cl0p ransomware attack in 2022. Issuing the fine of £963,900 ($1.3 million), the Information Commissioner’s Office (ICO) said the attack exposed “significant failures in the company’s approach to data security.” The attack, claimed by Cl0p, was detected ...