If you’re still in single sig world, Cold Card or otherwise, please consider the upgrade to multisig. I worked on and recommend Unchained. Bitkey and Casa are also great options. Multisig with multiple hardware vendors is phenomenal security and easy to set up. These companies will hold your hand to make it easy for you.

If you don’t want a corporate coordinator, BTC sessions has done excellent guides on Multisig setups with sparrow. Go to his YouTube channel.

If you need time to consider all this and are on an affected cold card device, consider River and Stike as temporary custodial options.

You’re not stupid for using single sig. You’d be shocked by the number OG’s affected by this. Every few years we get a reminder to harden our security posture. So take a deep breath and do the work!