Some Keystone Nexus app services under attack... Android v1.3.7 distributed

Keystone's crypto wallet app Keystone Nexus suffered a cyberattack that temporarily disrupted service for some users, prompting the company to harden server security and begin rolling out Android version 1.3.7. In a notice posted on X, Keystone said it responded immediately after detecting the attack but did not disclose the exact timing. The company said its investigation so far has found no evidence that user assets or personal data were affected, though it noted this reflects its own findings rather than an independent audit or final conclusion. The incident highlights operational risk for self-custody wallet providers even when private keys remain in users' hands. Next, watch for the full Android rollout, any iOS update, and whether Keystone publishes a post-mortem detailing the attack vector and scope.