AppRiver Blog

Attackers Leverage Stolen Email Credentials In Malware Attacks

Throughout 2017 we observed a major increase in phishing efforts, reaching peak levels over the summer, and this trend has continued to intensify in 2018. Much of this effort was expertly tailored to gather users’ login credentials to their preferred email provider. Ultimately attempting to compromise Office365, Gmail, ...

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Global Security Report: Ransomware as a business explodes

Global Security Report 2017

Ever since Cryptolocker was unleashed on a global scale in late 2013 resulting in the extortion of millions of dollars paid to the perpetrators, cybercriminals have been coming out of the woodwork to get in on the action.

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Want to know what threats to expect in 2018?

AppRiver security analysts Troy Gill and David Pickett took a peek in their crystal ball to see what cyber threats we may see in 2018.

These predictions as well as a look back at 2017 can be found in AppRiver's Global Security Report.

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Necurs Botnet Launching Massive Ransomware Attacks

****Update: 12/29/2017 9 A.M.****

Necurs botnet operators continue to show unpredictability. Following the afternoon blog update yesterday they turned up the volume.  It ended up being our highest volume day of the year originating from the massive botnet.  We blocked 49,784,485 million ransomware messages destined to...

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MSSP Alert: NC County Stops Cyberattacks After Refusal to Pay Ransomware

Mecklenburg County in North Carolina has no patience for cyberattacks. And they proved that when they recently refused to pay $23,000 in ransomware.

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Becker's Hospital Review: 10 biggest malware campaigns & high-profile cyberattacks of 2017

2017 was definitely not a quiet year when it came to cybercrime.

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Salted Hash: Want to know what frightens admins?

On this week's episode, CSO's Salted Hash security writer Steve Ragan talks with CSO's Michael Nadeau to talk about things that keep IT administrators awake at night. Hint: Ransomware is not the only thing.

The items in the episode were pitched to CSO by AppRiver.  The data in the list was sourced from working security...

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Holiday Shopping Online? Here Is What To Watch For

Tis the season ... and hackers are not taking a break. Already we are starting to see emails targeting online shoppers.

Taking advantage of all those online sales also means waiting for and tracking your packages to make sure they arrive safe and sound on your doorstep. And that is exactly what hackers are counting on. Be...

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New Ransomware Variant Abusing DDE Functionality in Office Documents

This morning we began seeing a large volume of messages that ultimately lead to the install of the “Asasin” ransomware, aptly named after the naming convention used when encrypting the user’s files. We have been seeing this Ransomware type for about a week now but it is now relying on a new infection technique.

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Locky Ransomware Attacks Ramp Up

***UPDATE*** In the past 24 hours we have seen over 23 million messages sent in this attack, making it one of the largest malware campaigns that we have seen in the latter half of 2017.

Malicious email campaign

As many US workers were arriving to their offices, a massive malicious email campaign began attempting to reach...

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