Articles in « Email Security »

Remote Images Are Pushing Email Filters to Their Limits

Remote Images Are Pushing Email Filters to Their Limits

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January 14, 2021

Phishing emails impersonating popular brands like Microsoft or PayPal need visual content to be successful. From brand logos to colorful pictures, images provide a visual cue to the recipient that the email is harmless and legitim[...]
Hackers are Bypassing Transport Layers and Depositing Spam via IMAP

Hackers are Bypassing Transport Layers and Depositing Spam via IMAP

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December 15, 2020

Vade Secure has detected a wave of spam emails that are being directly deposited into mailboxes without passing through transport layers. The wave, which included 300,000 spam messages sent to a single customer in one day, has bee[...]

Email Security Predictions 2021: 6 Ways Hackers Will Target Businesses

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December 10, 2020

It’s that time of year when we make our predictions about the biggest email security threats that will emerge in the coming year. Vade Secure’s experts weigh in on the threats that will have the biggest impact on businesses in 202[...]

10 to 15 Percent of Black Friday Emails Are Malicious

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November 26, 2020

Black Friday, the largest shopping event of the year that somehow is no longer a single day but weeklong event, brings with it an onslaught of promotional email. In the past week, Vade Secure has detected a wave of Black Friday em[...]
email-spoofing

Defending against email spoofing

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November 05, 2020

Email spoofing is a technique for forging an email header to trick recipients into believing a sender is a familiar brand or acquaintance. It’s a critical element of both phishing and spear phishing attacks that can be extremely d[...]

Rethinking URL Rewriting in Email Security

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September 24, 2020

URL rewriting is ubiquitous in email security. The underlying functionality might be different from vendor to vendor, but the idea is the same: When users interact with URLs inside their inbox, URL rewriting affords the ability to[...]

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