We are living in a world in which we have to be vigilant regarding criminals who try to scam us. These criminals contact us via email and telephone. In some instances, their pitches are very intelligent and logical and, if you've been having computer problems for a month, for example, and you get a phone call from someone claiming to be a techie who does outsourced work for Microsoft, you might be tempted to allow him access to your computer. DON'T! A legitimate techie won't initiate a call to a potential client and Microsoft never initiates calls to clients or potential clients. If you get an unsolicited call from a techie, just hang up. Never give someone who initiates an unsolicited phone call or email your credit card, bank, brokerage, and/or social security information. In fact, you should never give out your social security information to anyone except your bank, government entities, and your employer. Your doctors don't need it nor does Quest Diagnostics.
Also, don't click on links from your bank, credit card companies, and brokerage accounts. If you get an email from any of the aforementioned, log into the account yourself. Finally, don't open attachments from people you don't know.
If someone emails you and offers to pay you, through your PayPal account, for services they would like you to perform for him/her and requests that you send money to a third party, it's a scam. Perhaps the easiest way to ascertain if you're dealing with a scammer is to ask for his full name, phone number, company name, and address. Anyone who gives you information that doesn't come up in a Google search or refuses to provide you with his contact information is, probably, trying to scam you.
The bottom line is that you can't afford to trust strangers. This is true not only in business, but also in your personal life.
Since there is so much online information about everyone, these days, it behooves you to Google everyone you meet with whom you're thinking of doing business or having a personal relationship. This is not paranoia: it is self-protection. Be alert to offers or assurances made, by a stranger, that sound too good to be true. If you want to contribute to a charity, you should contact the charity yourself.
Most importantly, pay attention to your gut. If your instincts tell you that something isn't right, it's a sign that you need to do your due diligence before providing access to your computer, PayPal account and/or your wallet.