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Xavier Stevens

Chercheur en sécurité, Fastly

Xavier Stevens is a Staff Security Researcher at Fastly, with a focus on threat research, detection engineering, and product innovation.

  • What is TLS Fingerprinting?| Fastly

    Équipe de recherche en sécurité Fastly, Xavier Stevens

    TLS fingerprinting has become a prevalent tool to help security defenders identify what clients are talking to their server infrastructure.

    Sécurité

  • Threat hunting network callbacks in WAF data

    Équipe de recherche en sécurité Fastly, Xavier Stevens

    Threat hunting is the practice of looking for active attackers who have possibly penetrated security boundaries within an organization. WAF data can be a valuable resource in threat hunting for network callbacks. Here’s how.

    Sécurité

  • Spring: CVE-2022-22963 & Spring4Shell (CVE-2022-22965) | Fastly

    Équipe de recherche en sécurité Fastly, Xavier Stevens, 1 de plus

    In this post, we review details for two RCE vulnerabilities impacting Spring Cloud and Spring Framework, including how Fastly customers can protect themselves from this vulnerability.

    Sécurité

  • WAF framework measures WAF effectiveness | Fastly

    Équipe de recherche en sécurité Fastly, Simran Khalsa, 1 de plus

    Our new WAF efficacy framework provides a standardized way to measure the effectiveness of a WAF’s detection capabilities through continuous verification and validation. Here’s how it works.

    Engineering
    Sécurité

  • Log4Shell attacks (CVE-2021-44228) insights | Fastly

    Équipe de recherche en sécurité Fastly, Xavier Stevens, 1 de plus

    We’re sharing our latest data and new insights into the Log4j/Log4Shell vulnerability (CVE-2021-44228 + CVE-2021-45046) in this post in order to help the engineering community cope with the situation. We also share our guidance around testing your environment against many of the new obfuscation methods that have been seen.

    Informations sur le secteur
    Sécurité

  • Log4Shell exploit found in Log4j | Fastly

    Équipe de recherche en sécurité Fastly, Xavier Stevens, 1 de plus

    CVE-2021-44228 is a Remote Code Execution vulnerability in the Apache Log4j library being actively exploited. We provide our observations into the exploit and a summary of its impact.

    Sécurité
    Engineering

  • Atlassian Confluence OGNL Injection Vulnerability Protection | Fastly

    Équipe de recherche en sécurité Fastly, Xavier Stevens, 1 de plus

    Our Security Research Team has built and deployed a rule to help protect customers of our next-gen WAF against the recently announced Confluence Server OGNL injection vulnerability, CVE-2021-26084.

    Sécurité
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