Pierluigi Paganini
September 30, 2026
Mandiant and GTIG detail active exploitation of a Citrix NetScaler zero-day, deploying custom web shells WHIPSHOT and SLAPSHOT for root access. Mandiant and Google Threat Intelligence Group caught active exploitation of a zero-day in Citrix NetScaler ADC and Gateway appliances in late September 2026. The bug, tracked as CVE-2026-88772 (CVSS score of 9.5), has been […]
Pierluigi Paganini
May 14, 2021
Magecart cybercrime gang is using favicon to hide malicious PHP web shells used to maintain remote access to inject JavaScript skimmers into online stores. Magecart hackers are distributing malicious PHP web shells hidden in website favicon to inject JavaScript e-skimmers into online stores and steal payment information. Researchers from Malwarebytes observed threat actors, likely Magecart […]
Pierluigi Paganini
September 16, 2020
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) released a malware analysis report (MAR) that includes technical details about web shells employed by Iranian hackers. A web shell is a code, often written in typical web development programming languages (e.g., ASP, PHP, JSP), that attackers implant on web servers to gain remote access and code […]
