3 ms·They can slow down repeated failed attempts to stop "dictionary" attacks.by jonny_eh 7y agoThey can slow down repeated failed attempts to stop "dictionary" attacks.lostlogin 7y agoBetween different devices and VPNs, getting 20 unique attempts wouldn’t very hard to do manually.jonny_eh 7y agoAlways have a 3 second delay? Paypal does something like that, even on success.