A hacker compromised the backend system of Doublespeed, an Andreessen Horowitz-backed startup, and attempted to use its network of AI-generated TikTok accounts to post memes attacking the venture capital firm.
Screenshots obtained by 404 Media show the attacker queued content calling a16z the 'antichrist' for publication via the company's dashboard. The memes included images of a16z co-founder Marc Andreessen alongside occult symbols.
Data breach targets automated influencer network
The breach targeted the infrastructure used by Doublespeed to operate a 'phone farm'—a collection of devices used to bypass social media platform policies against inauthentic behavior. The hacker claimed to have exfiltrated 47MB of data and gained access to 573 accounts and 413 phones.
Doublespeed co-founder Zuhair Lakhani told 404 Media that the company has since secured the vulnerability.
“We’re aware of the unauthorized access attempt and addressed it quickly,” Lakhani said in an email. “This involved an older system for queuing posts that had remained in place for compatibility with existing customer workflows, and we have since secured it.”
Lakhani stated that no unauthorized posts were successfully published and that there is no evidence of a broader impact on customers. As of Monday, the targeted memes had not appeared on the impacted social media handles.
This incident marks at least the second security breach for the startup. A December 2025 hack revealed the existence of 400 TikTok accounts used to promote products like supplements and dating apps without disclosing they were advertisements.
Doublespeed uses AI to generate fake influencers and videos to simulate real user engagement. The company, which raised $1 million through a16z’s 'Speedrun' accelerator, plans to expand its automation capabilities to X and Instagram.
