I've never understood why we tell newbies, or anyone else for that matter, to only check a few characters of an address. Checking a few characters is not a foolproof way to protect against clipboard malware now, and it will become even less reliable as time goes on, malware becomes more complex, and vanity address generators become more efficient.
It is not time wasting to check all characters of an address. If I withdraw my Bitcoin from exchanges, I would like to check it two or three times, depend on each exchange confirmation process for withdrawal.
- 30 seconds for one checking time.
- 1 min 30 seconds for three checking times.
- It is worth to make sure I don't make any mistake for my withdrawal.
LoyceV has a topic
How to lose your Bitcoins with CTRL-C CTRL-V