Threat Response Analyst

Mimecast; Johannesburg; On-site; ZAR 350 000 - 500 000; Full time

Job summary

A global cybersecurity firm is looking for a Threat Response Analyst in Johannesburg. You will analyze email threats, provide remediation, and work with a dynamic team. Strong knowledge of email security technologies and excellent communication skills are essential. This role offers opportunities for professional development in a rapidly evolving threat landscape.

Qualifications

• 1+ years’ experience working with the Mimecast platform.
• Understanding of email security technologies is crucial.
• Working knowledge of email traffic management is necessary.

Responsibilities

• Analyze phishing/malicious email campaigns to identify indicators of compromise.
• Categorize email threats and update detection accordingly.
• Provide security advice and remediation to customers.
• Research and investigate new security threats.

Skills

Email security technologies

Communication skills

Time management

Research and data analysis

Tools

Mimecast platform

Domain Name System (DNS)

SMTP, SSL/TLS, POP3, IMAP, TCP/IP

Job description

Job title: Threat Response Analyst

Job Location: Gauteng, Johannesburg

Deadline: November 29, 2025

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Associate Threat Response Analyst

As a Threat Response Analyst you will be joining the Mimecast Messaging Security organization and be responsible for supporting a service for on-demand threat resolution.

The service is designed to provide customers with prompt feedback and intelligence on email-borne threats, remediate these threats from their email environment to reduce dwell time, and put the appropriate detections in place to prevent further incidents from occurring. The role may require working afternoon / evening shifts and being part of a rotation for holiday support.

Messaging Security ensures that our security-focused solutions are performing accurately and efficiently. We verify that Mimecast can detect the latest email-borne threats amidst a rapidly evolving threat landscape.

Through threat research and customer feedback we identify where Mimecast can be improved and update detection at our spam, URL, and attachment security layers. We strive for proactive, rather than reactive, approaches to threat detection.

The team is also responsible for assuring that Mimecast maintains an exceptional sending reputation by looking for compromised email addresses and senders following poor mailing practice.

Messaging Security works closely with research and development, as well as customer support. We are a global team that spans three continents.

What you'll do

• Analyzing phishing / malicious email campaigns to identify IOC's
• Categorizing email threats and determining the best means of updating detection
• Providing email security advice, expertise, and remediation to our customers
• Understanding security policies within the Mimecast Administration Console and providing configuration suggestions to customers
• Researching and investigating the latest security threats and their potential impact to Mimecast customers
• Working with security vendors around threat detection techniques and remediationIdentifying opportunities for improved processes and systems

What you'll bring

• Working knowledge of messaging (email traffic management) and routing
• Experience and understanding of email security technologies
• Strong Understanding of Domain Name System (DNS)
• Strong Understanding of SMTP, SSL / TLS, POP3, IMAP, TCP / IP
• Ability to translate complex technical capabilities into management friendly responses
• 1+ years’ experience working with the Mimecast platform
• Great oral and written communication skills in order to work closely with customers as well as office-based and remote team members
• Time management skills and the ability to self-prioritize
• Curiosity about the infrastructure of phishing / malicious email campaigns
• Research / Data Analysis jobs