1.2.7 Mitigate Known Problems
There was a period of time when it was common to learn about new protocol issues, but that now appears to be behind us. The problems were exhausted and largely fixed. Then TLS 1.3 came along, which made things much better still. Critical issues at the protocol level are not so common today, but it’s generally accepted that security deteriorates over time. For that reason, it’s a good practice to be aware of what’s going on. At this point in time, the most likely problems you will encounter are implementation issues in libraries and server software. Apply patches promptly when they become available.