Hacktivism
Medtech giant Stryker offline after Iran-linked wiper malware attack
Leading medical technology company Stryker has been hit by a wiper malware attack claimed by Handala, an Iranian-linked and pro-Palestinian hacktivist group. The medtech giant manufactures a range of products, including surgical and neurotechnology equipment. With over 53,000 employees, Stryker is a Fortune 500 company that reported global sales of $22.6 billion in 2024. Handala says they […]
UK govt. warns about ongoing Russian hacktivist group attacks
The U.K. government is warning of continued malicious activity from Russian-aligned hacktivist groups targeting critical infrastructure and local government organizations in the country in disruptive denial-of-service (DDoS) attacks. The attacks are aimed at taking websites offline and disabling services, the UK’s National Cyber Security Centre (NCSC) says in an alert today. Despite lacking sophistication, a DDoS attack […]
CyberVolk’s ransomware debut stumbles on cryptography weakness
The pro-Russia hacktivist group CyberVolk launched a ransomware-as-a-service (RaaS) called VolkLocker that suffered from serious implementation flaws, allowing victims to potentially decrypt files for free. According to SentinelOne researchers who examined the new ransomware family, the encryptor uses a hardcoded master key in the binary, which is also written in plaintext in a hidden file on […]
Ukrainian hacker charged with helping Russian hacktivist groups
U.S. prosecutors have charged a Ukrainian national for her role in cyberattacks targeting critical infrastructure worldwide, including U.S. water systems, election systems, and nuclear facilities, on behalf of Russian state-backed hacktivist groups. On Tuesday, 33-year-old Victoria Eduardovna Dubranova (also known as Vika, Tory, and SovaSonya) was arraigned on charges related to her alleged role in […]
Canada says hacktivists breached water and energy facilities
The Canadian Centre for Cyber Security warned today that hacktivists have breached critical infrastructure systems multiple times across the country, allowing them to modify industrial controls that could have led to dangerous conditions. The authorities issued the warning to raise awareness of the elevated malicious activity targeting internet-exposed Industrial Control Systems (ICS) and the need […]
MuddyWater’s DarkBit ransomware cracked for free data recovery
Cybersecurity firm Profero cracked the encryption of the DarkBit ransomware gang’s encryptors, allowing them to recover a victim’s files for free without paying a ransom. This occurred in 2023 during an incident response handled by Profero experts, who were brought in to investigate a ransomware attack on one of their clients, which had encrypted multiple […]
Russian airline Aeroflot grounds dozens of flights after cyberattack
Aeroflot, Russia’s flag carrier, has suffered a cyberattack that resulted in the cancellation of more than 60 flights and severe delays on additional flights. Although official sources from Russia, like the General Prosecutor’s Office, did not attribute the attack to specific threat groups or even origin, responsibility was taken by Ukrainian and Belarusian hacktivist collectives ‘Silent Crow’ […]
Europol disrupts pro-Russian NoName057(16) DDoS hacktivist group
An international law enforcement operation dubbed “Operation Eastwood” has targeted the infrastructure and members of the pro-Russian hacktivist group NoName057(16), responsible for distributed denial-of-service (DDoS) attacks across Europe, Israel, and Ukraine. Operation Eastwood was led by Europol and Eurojust with support from 12 countries. It took place on July 15, 2025, and targeted the systems and […]
Pro-Israel hackers hit Iran’s Nobitex exchange, burn $90M in crypto
The pro-Israel “Predatory Sparrow” hacking group claims to have stolen over $90 million in cryptocurrency from Nobitex, Iran’s largest crypto exchange, and burned the funds in a politically motivated cyberattack. The attack occurred on June 18, 2025, with Nobitex first reporting the breach on X at 2:24 AM EST. “This morning, June 19, our technical team detected signs […]
Pro-Russia hacktivists bombard Dutch public orgs with DDoS attacks
Russia-aligned hacktivists persistently target key public and private organizations in the Netherlands with distributed denial of service (DDoS) attacks, causing access problems and service disruptions. The situation was acknowledged via a statement by the country’s National Cyber Security Center (NCSC), part of the Dutch Ministry of Justice. “This week, several Dutch organizations have been targeted […]