Silent Skimmer Gets Loud (Again)


In late May 2024, Unit 42 researchers observed an adversary compromising multiple web servers to gain access to the environment of a multinational organization headquartered in North America.

Based on overlaps in adversary infrastructure and tools, as well as tactics, techniques and procedures (TTPs), it’s possible to attribute the activity identified to the same threat actor behind the Silent Skimmer campaign. In September 2023, an online payment scraping campaign was uncovered and dubbed Silent Skimmer. Since then, there has been little to no news of Silent Skimmer – until now.

Read more…
Source: Palo Alto Unit 42


Sign up for our Newsletter


Related:

  • Ransomware gangs are now expanding to physical threats in the real world

    August 1, 2025

    Ransomware gangs seem to be getting desperate when it comes to getting results, as besides encrypting and leaking data on the web, they’ve also started threatening CEOs with physical violence. Cybersecurity researchers Semperis claim over the past 12 months, in 40% of ransomware incidents, the CEOs of the affected company were also physically threatened – which ...

  • Frozen in transit: Secret Blizzard’s AiTM campaign against diplomats

    July 31, 2025

    Microsoft Threat Intelligence has uncovered a cyberespionage campaign by the Russian state actor we track as Secret Blizzard that has been targeting embassies located in Moscow using an adversary-in-the-middle (AiTM) position to deploy their custom ApolloShadow malware. ApolloShadow has the capability to install a trusted root certificate to trick devices into trusting malicious actor-controlled sites, enabling ...

  • Minnesota: St. Paul cyber attack sparks reflections, calls to action

    July 31, 2025

    The recent cyber attack in St. Paul has gained pretty much everyone’s attention in the government technology space. It didn’t hurt that Gov. Tim Walz deployed 13 members of the Minnesota National Guard’s Cyber Protection Unit to help fix the damage — reportedly the first time that unit has deployed inside the state in its eight ...

  • Cobalt Strike Beacon delivered via GitHub and social media

    July 30, 2025

    n the latter half of 2024, the Russian IT industry, alongside a number of entities in other countries, experienced a notable cyberattack. The attackers employed a range of malicious techniques to trick security systems and remain undetected. To bypass detection, they delivered information about their payload via profiles on both Russian and international social media platforms, ...

  • Apple patches multiple vulnerabilities in iOS and iPadOS. Update now!

    July 30, 2025

    Apple released a security update for iOS and iPadOS to patch multiple vulnerabilities, including one that could leak sensitive information when visiting a malicious website and one that allows an attacker to display false information in the address bar. In total, 29 vulnerabilities were patched, most of them in WebKit, Apple’s web rendering engine that powers ...

  • Gunra Ransomware Group Unveils Efficient Linux Variant

    July 29, 2025

    Gunra ransomware was first observed in April 2025 in a campaign that targeted Windows systems using techniques inspired by the infamous Conti ransomware. Trend Micror monitoring of the ransomware landscape revealed that threat actors behind Gunra have expanded with a Linux variant, signaling a strategic move toward cross-platform targeting. The novel ransomware group has already made ...