Getting email attachments is a common thing these days, and it is, therefore, imperative that you learn to handle them with care, as they are often used as a vector to deliver a malware payload to your computer. Let us take a look at some of the precautions you need to take when opening email attachments.
The classic cases of unsolicited mail with malicious file attachments are usually of this nature:
- You won a reward or a lottery, and you need to fill in the details in the attached form
- Your business order has been canceled or that you got a new order
- Emails that talk of some Invoices
- Work from home and earn money
- Pain relief or weight-loss programs
- Letter from a Bank, PayPal, etc., asking you to submit details as per the attachment or else the account will get blocked, etc.
If you are using a good antivirus software or an Internet Security Suite, the chances are that the malware file will be automatically quarantined as soon as it is downloaded to your computer. If you are using an email client like Outlook, still better for you.
These days most of the commonly used email service providers like Outlook or Gmail have good filters in place that move such email – especially those who have .exe or compressed folders with exe files – automatically to the Junk folder.
But nevertheless, you need to be alert at all times!
Precautions to take when opening email attachments
First and foremost, never click on an email attachment that you were not expecting.
Next, check the email ID of the sender. Is it from someone you know?
But even if the email ID looks familiar, email spoofing and other hacks make it very easy to send email using someone else’s mail ID.
If your service or software provides, set your email preferences so that attachments don’t download or open automatically. This usually is the default setting – but never hurts to be sure. Make sure that you configure the Attachment Manager in Windows correctly.
Hover your mouse pointer over the attachment. Is it a .exe file? In that case, simply do not download it. Is it an Office .doc file? Then again do not click on it as it could be a Macro virus. Now, what if it has some other file extension? Even if this is the case you need to take sufficient precautions as malware writers can easily disguise a virus or a trojan or a ransomware file using any file extension.
If at all you cannot control your curiosity and you want to check out the email attachment, do not select the Open option but instead select the Download option. Once the file has been downloaded to your computer, right-click on it and scan with your antivirus software.
If you wish to be safe, upload it and get it scanned with any of these free online antivirus scanners.
Remember, if the attachment file you download turns out to be malicious, it could infect your files and even wipe out your data or lock it, if it is a ransomware file. So you really need to be sure that the file you downloaded before you open it. This post will show you how to identify malicious email that has a virus.
My rule? If in doubt, I don’t. Period.
Have any more ideas? Do share the precautions you take.