MEXC announced it is expanding its Guardian Fund, the exchange's dedicated user-protection reserve, to $500 million, pointing to the recent Coldcard hardware wallet security incident as a reminder of why strong protections matter across the industry.

The exchange referenced reports linking the Coldcard exploit to certain 2021 Mk3 firmware releases, without disclosing further details of the incident itself. MEXC said the Guardian Fund expansion runs alongside its existing Proof of Reserves program, which it described as independently audited.

MEXC Expands Guardian Fund to $500M Following Coldcard Security Incident
Image via @MEXC on X

Guardian Fund's Role

Exchange-run protection funds like MEXC's Guardian Fund are typically positioned as a backstop for users in the event of security breaches, exploits, or other incidents that could otherwise leave customer funds at risk. By expanding the fund's size to $500 million, MEXC is signaling a larger financial cushion available to cover potential losses, though the exchange did not detail the fund's exact terms of use or how the reserve is held.

Security Concerns Continue to Ripple Through the Industry

The Coldcard incident referenced in MEXC's announcement has prompted a wider round of security commentary across the crypto industry in recent days, with other firms similarly citing the exploit as a reminder to reassess their own protective measures. The episode underscores how a single high-profile security incident can prompt a broader wave of defensive posturing across exchanges and infrastructure providers alike.