vx-underground delivers terabytes of data a month, houses hundreds of thousands of malware samples, shares thousands of malware source codes, and proactively aggregates additional malware content for free. In an incredibly short period of time we aided Red Teams, Blue Teams, Anti-Virus companies, universities (instructors and students both, respectively), and government institutions, for free.
However, these things cost money. Quite a bit of money. We also, in the spirit of full-disclosure, occasionally like to pay ourselves for endless work.
If you use vx-underground and/or appreciate what we do, please consider donating to help us stay alive throughout 2021.