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Security Analyst

Company Overview

Cloudmark is a trusted leader in intelligent threat protection against known and future attacks, safeguarding 12 percent of the world’s inboxes from wide-scale and targeted email threats. With more than a decade of experience protecting the world’s largest messaging environments, only Cloudmark combines global threat intelligence from a billion subscribers with local behavioral context tracking to deliver instant and predictive defense against data theft and security breaches that result in financial loss and damage to brand and reputation. Cloudmark protects more than 120 tier-one service providers and tens of thousands of enterprises, including, Verizon, Swisscom, Comcast, Cox and NTT.

Objective of Position

The Security Analyst will be responsible for day-to-day accuracy of our products, monitoring customer data for new threats and reacting quickly when such threats occur as a part of our Security Operations (SOC) team. The team uses a follow the sun model and works closely with the Engineering, Support and Technical Services teams who highly value a close working relationship with the SOC. As a member of this team you will be working with some of the largest Internet Service Providers and Mobile Operators to ensure the highest level of threat detection, analysis and high quality response.


  • Participating in the monitoring and adjustment of detection systems for new threats and use best practices to ensure these threats are stopped quickly
  • Work closely with our Engineering, Support and Technical Services teams to provide customers with a multipronged approach to accuracy
  • Document threats and trends for internal and external communication
  • Provide support for users submitting CSI remediation requests


  • Good understanding of the Internet and how malicious actors use available resources
  • Working knowledge of regular expressions and shell scripting
  • Knowledge of basic statistics and familiarity with data mining systems, including writing ad hoc queries for data mining and statistical analysis.  Familiarity with SQL and SIEM (Splunk, Kibana) software is a plus.
  • Naturally curious person who is able to work with minimal guidance while collaborating across multiple departments within the company
  • Good communication.  Comfortable conveying research via written reports and in person presentations. 
  • Some experience in software development in a UNIX environment, using languages such as C/C++, Go, Python, Perl or Java is useful.
  • Malware analysis, reverse engineering, or automated analysis of malware is a plus
  • Understanding of operating systems and network protocols is also useful.
  • Technical experience with email, DNS and/or other messaging


  • Undergraduate or graduate degree or equivalent level of industry experience in computer science, mathematics, security, malware analysis or related fields.
  • A minimum of 3 years-experience within the anti-abuse, threat or other security research fields

This position is a work-from-home position with the ideal candidate based in Europe (United Kingdom, Poland, Spain, France, Netherlands, or Italy).

Cloudmark is an equal opportunity employer and considers qualified applicants for employment without regard to race, color, creed, religion, national origin, sex, sexual orientation, gender identity and expression, age, disability, or Vietnam era, or other eligible veteran status, or any other protected factor.

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