Cisco Talos Intelligence Blog

August 18, 2022 08:08

Ukraine war spotlights agriculture sector's vulnerability to cyber attack

The war in Ukraine has caused massive problems for global food supplies, underscoring the high impact of disruptive events to agriculture entities and related organizations. * The challenges to the Ukrainian agriculture sector imposed by the war--and global ripple effects--have

August 8, 2022 08:08

Small-time cybercrime is about to explode — We aren't ready

The cybersecurity industry tends to focus on extremely large-scale or sophisticated, state-sponsored attacks. Rightfully so, as it can be the most interesting, technically speaking. When most people think of cybercrime they think of large-scale breaches because that's what domin

July 27, 2022 08:07

What Talos Incident Response learned from a recent Qakbot attack hijacking old email threads

By Nate Pors and Terryn Valikodath. Executive summary * In a recent malspam campaign delivering the Qakbot banking trojan, Cisco Talos Incident Response (CTIR) observed the adversary using aggregated, old email threads from multiple organizations that we assess were likely ha

June 21, 2022 07:06

Avos ransomware group expands with new attack arsenal

By Flavio Costa, * In a recent customer engagement, we observed a month-long AvosLocker campaign. * The attackers utilized several different tools, including Cobalt Strike, Sliver and multiple commercial network scanners. * The initial ingress point in this incident was a pa

May 18, 2022 02:05

The BlackByte ransomware group is striking users all over the globe

News summary * Cisco Talos has been monitoring the BlackByte Ransomware Group for several months, infecting victims all over the world, from North America to Colombia, Netherlands, China, Mexico and Vietnam. * The FBI released a joint cybersecurity advisory in February 2022 wa

January 7, 2022 16:01

Threat Roundup for December 31 to January 7

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Dec. 31 and Jan. 7. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral

December 3, 2021 15:12

Threat Roundup for November 26 to December 3

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Nov. 26 and Dec. 3. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral

November 19, 2021 14:11

Threat Roundup for November 12 to November 19

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Nov. 12 and Nov. 19. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behaviora

November 10, 2021 17:11

North Korean attackers use malicious blogs to deliver malware to high-profile South Korean targets

* Cisco Talos has observed a new malware campaign operated by the Kimsuky APT group since June 2021. * Kimsuky, also known as Thallium and Black Banshee, is a North Korean state-sponsored advanced persistent threat (APT) group active since 2012. * This campaign utilizes malici