I have 2-factor authentication enabled (in fact, it's part of my company's security policy that everyone must follow).. but I went to that page and saw shitloads of "user.failed_login" messages over the past five days and it kind of freaks me out.
That said, it kind of freaks me out in a good way. I'm glad github has this panel. People should be aware when several failed login attempts are made on their accounts.
Indeed, I've got failed login attempts from four different IP addresses (115.127.35.4, 183.96.115.54, 186.89.119.140, and 190.73.143.216) over the last two days.
190.206.118.221, 61.247.35.20, 201.243.203.209, 190.204.171.95, 190.36.181.198, 213.163.72.224 were the IPs that hit me. But yes, only for the last 3 days and there's no way they guessed my password in 5 attempts, unless someone's decrypted the Adobe document
Also recommend enabling 2 factor authentication.