PSN is down again and this time the outage appears to be worldwide. This has started to happen for the past couple of hours if the reports from the various users are accurate.
PSN outage is affecting almost every service that is available right now. You might experience error code WS-37403-7 or a different error depending on the servers.
Sony has an official PSN Status website which seems to list the problems for almost every service including the sign-in for PSN.
Affected Platforms:Other , PS Vita , PS3™ , PS4™ , WebAffected Services:You may have some difficulty signing in or creating an account on PlayStation™Network. Our engineers are working to resolve the issue as soon as possible, and we thank you for your patience.