Managing personal Outlook.com account settings, security, and privacy
Hello
If all of the recovery methods are current and correct. You can carry on and ignore this.
This doesn't mean something is wrong with your account, or your account is being accessed by others.
There are a lot of users who don't review these recovery methods, and when they forgot their passwords, they realized their phone numbers or email addresses were outdated and couldn't recover their account successfully. This is Microsoft's effort in preventing this by popping this up to remind user to review periodically.