Ruby Sleet threat group

Ruby Sleet is a threat group thought to operate from North Korea. Public reporting about it is still limited. This free profile brings together what is known about it, so you can judge the risk to you. It lists the other names the group goes by and links to every public report behind it.

Attack techniques
0
Public reports
1
Thought to operate from
North Korea
Other names
1
Built from public reporting, with every source listed below.
Overview

Who is Ruby Sleet?

Ruby Sleet has 1 other name in security research. Below is what published reporting says about it, with a link to every report so you can check the detail yourself.

Also known as

CERIUM

Security companies each give the same group their own name, so one group can have many.

What public reporting says

Ruby Sleet is a threat actor linked to North Korea's Ministry of State Security. Cerium has been involved in spear-phishing campaigns, compromising devices, and conducting cyberattacks alongside other North Korean threat actors. They have also targeted companies involved in COVID-19 research and vaccine development.

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FAQ

Questions about Ruby Sleet

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Ruby Sleet is a threat group thought to operate from North Korea. Public reporting about it is still limited.

Public reporting places Ruby Sleet as operating from North Korea. Attribution is never certain: it rests on the tools, infrastructure and targets researchers have seen.

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