Online users, if you have received the "You Have Reached the Storage Limit of Your Mail" below, claiming that your email accounts have reached their storage quota, and ask you to click on a link to upgrade email quota, please delete the email and do not follow the instructions in it. This is because the email is phishing scam being sent by cybercriminals to steal their potential victims’ email account credentials. Once cybercriminals have stolen their victims’ email account credentials, they will gain access to their accounts, hijack their accounts and use them fraudulently.
A Sample of the "You Have Reached the Storage Limit" Phishing Email
From: Mailbox Account [mailto:firstname.lastname@example.org]
Sent: Wednesday, November 21, 2018 5:04 AM
Subject: Final Warning Activate Your Account to Avoid Deactivation
Mail Quota: (98% Full)
Your email quota has reached 98% and will soon exceed its limit.
Follow the URL below to upgrade your quota to 25GB for free to avoid loss of email data.
Upgrade Email Quota
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Online users who have already been tricked by the phishing emails are asked to change their passwords immediately before their accounts are hijacked or used fraudulently.