As WikiLeaks continues to extend the mileage from its "Vault 7 cache" of CIA information, its latest release focuses on tools it says the agency uses for hacking Windows computers. While its release didn't include any source code, manuals described a "Grasshopper" tool used to create custom malware setups depending on the target intended. As CSO Magazine explains, it used some elements from the Carberp financial malware that leaked onto the internet in 2013. The CIA's Advanced Engineering Division and Remote Development Branch allegedly modified that malware, while the Grasshopper setup allows them to customize its ability to persist on the victim's computer, reinstall itself and evade antivirus scans.