Casa Bitcoin Security Service
As cryptocurrency becomes more commonplace, so does theft — an estimated $6.4 Billion has been taken from investors. Instead of leaving valuable Bitcoin in a wallet that's vulnerable to SIM swaps, phishing attacks, or forgotten/misplaced passwords, Casa uses a multsig protocol to ensure it's safe. Plans range from a simple app, which uses a phone's secure element, to the Diamond plan, which uses multiple hardware keys, a phone-based key, a key held by Casa, and even includes an optional sixth key that's held for estate-planning purposes. All of their plans are more secure than storing coins on an exchange, with their 3-of-5 multisig service offering up to 10x the security of a single hardware wallet.