Mimecast, which provides email management systems, updates that the hacker was able to hack into the company’s systems and access customer information.
According to the company, the hacker was able to gain access to a certificate used to identify Mimecast services located on Microsoft’s server.
The company also states that all customers who may have been harmed have been updated and it also asks all customers of the company to replace the existing certificate in their possession with a new certificate issued by the company.
The breach was identified by Microsoft, which updated Mimecast that an unidentified source accessed the company’s servers.
According to DZNet: Mimecast says hackers abused one of its certificates to access Microsoft accounts.
Mimecast, a provider of email management software, said learned of the security incident from Microsoft.
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Why Executive personal identifiable information Exposure Demands Continuous Monitoring
🕵️ Executive PII Risks Require Constant Monitoring
High-profile executives are prime targets for cybercriminals.
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📊 CISOs: Essential Free Risk Assessment Templates 📊
Risk assessments are the backbone of any cybersecurity strategy. But building them from scratch takes time, effort, and expertise. Luckily, there are free templates that help CISOs identify, analyze, and mitigate risks efficiently.
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1️⃣ NIST Cybersecurity Framework Risk Assessment Template – Aligns risks to NIST CSF categories for structured analysis.
https://www.nist.gov/cyberframework
2️⃣ CISA Risk Assessment Templates – Ready-to-use templates for critical infrastructure and IT systems.
https://www.cisa.gov/publication/cyber-essentials-risk-assessment
3️⃣ ISO/IEC 27005 Risk Assessment Template – Comprehensive framework for information security risk management.
https://www.iso.org/standard/75281.html
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https://www.sans.org/information-security-policy/
5️⃣ OWASP Risk Assessment Template – Focused on application and web security risks.
https://owasp.org/www-project-risk-assessment/
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https://www.isaca.org/resources
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https://cloudsecurityalliance.org/research/
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Top Cybersecurity Risks Threatening Healthcare in 2025
🏥 Healthcare Faces Rising Cybersecurity Threats
Ransomware, phishing, and unpatched software are putting hospitals and clinics at unprecedented risk. Sensitive patient data and critical medical systems are prime targets for cybercriminals.
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