Identifying PayPal Phishing Emails
Since most attempts at PayPal phishing will be through email, it's important to be able to tell genuine PayPal emails from the fake ones.
The most important thing to note is that the sender address listed is not necessarily real. That can be spoofed quite easily for someone who knows what they're doing with a scam. It may say that it's from "firstname.lastname@example.org" but it isn't necessarily real. You need to check the format. Does it just say "Dear PayPal User?" If so, then it's a PayPal phishing scam. PayPal always uses your name in their emails. They also aren't very alarmist, despite the horror stories out there. Emotional language about losing your account or any "urgent" needs for information should act as warning signs.
Also, look at what they apparently want or need. PayPal has an official list of things that they will never do in an email. You can find the list yourself here. Basically, they aren't ever going to ask you to list your information in a convenient package for identity theft.
They already know your name, so they will never ask for your name. They also won't ask for your important information through an email. They would handle that through more official channels. If they ever needed anything, they would send an official email asking you to login normally and provide the information that they need.
PayPal will also never expect you to just use a link to login to their website. In fact, it's a really good habit to never use email links to login to a website. Just type it out and go to your account. If there's a genuine concern, then there will be a reminder or option there.