Most malicious software also has its share of security holes that open the door for security researchers or neer-do-wells to liberate or seize control over already-hacked systems. Here’s a look at one long-lived malware vulnerability testing service that is used and run by some of the Dark Webs top cybercriminals. A chief selling point of this service is that, crooks being crooks, you simply cant trust them to be completely honest.”]
Source: https://krebsonsecurity.com/2020/05/this-service-helps-malware-authors-fix-flaws-in-their-code/