Every time I go check my account's activity I see something very weird and worrying: multiple attempts to log in to my account, anywhere from 1 to 3 daily attempts. This has been going on for years.
The list goes on and on, this is only the first page.
All attempts are being done through IMAP protocol, and a proxy chain is being used apparently. I know nothing about security, IMAP, brute-force, proxy chains, etc; so I come here to ask if there's anything I can do about this to defend myself proactively.
Can I turn off IMAP? Can I set email to just accept connections from specific IPs? What can be done as defense?