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April 17, 2019

SECURITY

DNS Hijacking Abuses Trust In Core Internet Service

1 min read

This blog post discusses the technical details of a state-sponsored attack manipulating DNS systems. While this incident is limited to targeting primarily national security organizations in the Middle East and...

April 17, 2019

SECURITY

To the Depth of TLS Invisibility and Beyond

3 min read

Encrypted traffic is changing the threat landscape...Encryption technology enables greater privacy and security to communicate and transact business online. Mobile, cloud, and web applications rely on well-implemented encryption mechanisms, using keys and certificates, to ensure confidentiality and trust.

April 16, 2019

SECURITY

Cryptographic Visibility: Quality Encryption at Your Fingertips

3 min read

There is only one thing more important than the right answer, and that is asking the right question. I have spent my entire career doing security analytics and all of...

April 16, 2019

SECURITY

Kill Complexity with Cisco Defense Orchestrator

2 min read

Managing security policies is complex and time-consuming, especially when your network has multiple firewalls deployed across many locations. Cisco Defense Orchestrator is here to make your job easier.

April 15, 2019

SECURITY

New HawkEye Reborn Variant Emerges Following Ownership Change

1 min read

HawkEye is another example of malware being marketed across various hacking forums. Talos observed ongoing malware distribution campaigns attempting to leverage the latest version of the HawkEye keylogger/stealer, HawkEye Reborn v9, against organizations to steal sensitive information and account credentials for use in additional attacks and account compromise.

April 15, 2019

SECURITY

Vulnerability Spotlight: Multiple vulnerabilities in Shimo VPN’s helper tool

1 min read

Cisco Talos is disclosing a series of vulnerabilities found in the Shimo VPN Helper Tool. Shimo VPN is a popular VPN client for MacOS that can be used to connect...

April 15, 2019

SECURITY

Black Hat Asia 2019: Watch Out for the Secondary Payload

5 min read

Cisco Security was a proud technology partner in the Network Operations Center (NOC) at Black Hat Asia, providing secure and open Internet access to attendees. See what the NOC discovered.

April 12, 2019

SECURITY

Threat Roundup for April 5 to April 12

1 min read

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Apr. 5 and Apr. 12. As with previous roundups, this post isn't meant to be an...

April 11, 2019

SECURITY

Sextortion Profits Decline Despite Higher Volume, New Techniques

1 min read

Sextortionists are doing everything to evade spam filters and convince potential victims that perceived threats are real. Here are some recent changes we’ve seen in the sextortion email landscape.

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