Inboxes are currently being hit by emails that urge you to click to view documents on Microsoft’s file hosting service OneDrive.
The text and subjects of the bogus emails vary considerably. Some versions may simply claim that your document is ready for viewing. Other versions may masquerade as quote requests or business related files that supposedly require your attention.
These emails are phishing scams that are designed to steal your email account login details.
If you click the link as requested, you will not be taken to OneDrive as you might expect. Instead, you will be taken to a fraudulent website that is designed to look like it belongs to rival file hosting service DropBox:
Despite its appearance, however, the site has no connection to Dropbox.
Once on the fake site, you will be asked to choose your email provider from a list. Clicking the name of the provider brings up a login box like the one in the screenshot below. Each login box is branded to the targeted email provider:
After you provide your email address and password and click the sign in button, you will be automatically redirected to a legitimate page on the Adobe website that allows you to download Adobe Reader.
But, meanwhile, online criminals can collect the login credentials that you supplied and use them to take control of your email account. Once they have gained access, the criminals can use the account to launch further spam, scam, and malware attacks in your name.
Often, your email account login credentials also provide access to linked services such as online file storage and app stores. If so, the criminals can also hijack these linked services, steal your personal information and conduct fraudulent transactions via your account.
If you receive one of these emails, do not click any links that it contains. Viewing a shared document via either OneDrive or Dropbox does not require you to provide your email account login details. In some cases, you may need to login to your Microsoft or Dropbox account to add, delete, or edit shared documents. If so, ensure that you are on the genuine file hosting website and not a fraudulent copy.
It is safest to login to all of your online accounts by entering the address into your browser’s address bar or via a trusted app.