Threat Brief: Mitigating Large-Scale Credential Attacks (Updated August 18)
An actor known as TheHatman claimed in August 2026 to have compromised large volumes of credentials from organizations' Microsoft Entra tenants, highlighting the continued risk of large-scale credential theft. Unit 42 provides mitigation guidance addressing this class of attack against cloud identity infrastructure. Security teams managing Entra environments should review the recommended defenses to reduce exposure to similar compromise attempts.
Researchers have discovered methods to bypass Windows 11's strongest security defenses without physical access to the machine, though the attack requires the attacker to already possess privileged system access. Last week also saw reports of records allegedly stolen from Azure tenants and Medusa ransomware targeting over 500 organizations, along with law enforcement actions against cybercrime operations.
The private equity firm said attackers broke into some of its cloud platforms during a five-day period in early July, compromising sensitive personal data. The post Apollo discloses data breach from ongoing wave of attacks hitting financial sector appeared first on CyberScoop.
Canada's Hospital for Sick Children has suffered another cybersecurity incident involving theft of employee data, reportedly linked to a vulnerability in a third-party software application. This marks the second significant attack on the institution, following a 2022 ransomware incident that disrupted hospital systems.
Russian network monitoring firm Microolap has confirmed a cyberattack claimed by pro-Ukraine hacking group Black Spark, which alleged it maintained access to the company's network for over a month. The attackers claimed to have compromised internal systems including EtherSensor, Microolap's network traffic analysis platform, according to statements made by the threat group.