I tried googling some things and found all websites in search results having this message below it: ‘This site may harm your computer’.
As of January 31, 23:17 Manila time, Google considers all websites harmful.
Got curious, I searched for ‘google’ itself. I saw the message for their own site.
By the time I blog this, I think all sites are already cleared of the message.
UPDATE (Feb 1, 02:16 Manila time): Google says it was all caused by human error.