Xavier Cho Email & Phone Number

Houston, Texas, Us

San Francisco, California, Us

• Built and maintained proficient detection mechanisms, underpinned by a proactive methodology aimed at recognizing and mitigating potential threats. This strategic endeavor substantially bolstered the robustness of our application security program and fortified the efficacy of our security operations.• Implemented automated alerting and monitoring mechanisms within GitHub, leveraging our Security Orchestration, Automation, and Response (SOAR) tool, to bolster enterprise security. Illustrative instances of these detections encompass external collaborators, enterprise ownership modifications, webhook alterations, two-factor authentication status, new ownership transitions, and similar categories.• Devised proactive alerting methodologies utilizing ChatOps and other integrative mechanisms to expedite responsiveness in alignment with Service Level Agreements (SLAs), facilitating efficient dissemination and assignment to diverse engineering teams• Engaged in collaborative efforts to assess, prioritize, and verify remedies for reports of medium to critical severity derived from our bug bounty program.• Delivered comprehensive reports and facilitated security awareness training across the entire organization• Established and maintained standardized workflow documentation to enhance the operational integrity of the application security program.• Performed weekly inquiries as part of incident response activities, encompassing the realms of data loss prevention, incident reporting, and comprehensive post-incident analysis.• Worked together cross-brand to exchange insights aimed at enhancing the security posture of Booking Holdings and its affiliated subsidiaries.

Anchorage, Ak, Us

• Purple teamwork• Reverse engineer malware• Maintained a server that prevents GCI from paying about $120,000 a year in audit penalties and fines.• Improved network visibility by 50% by ingesting logs into GCI’s security information and event management (SEIM) tool.• Performed phishing campaigns that prevented costs of $26,000 from events such as the cyber attack on Matsu and Valdez caused by Emotet malware.• Responsible for the management and operation of enterprise-wide security controls; enables the business to operate securely, protect its people, defend its assets, and preserve shareholder value.

Los Angeles, Ca, Us

check out my website for better visuals regarding the completed projects at xaviercho.dev.

Anchorage, Ak, Us

• Automated a point of sale report in Tableau that saved the company $150,000 in man hours.• Created HR’s new Internal Training website through SharePoint’s CMS using HTML and JavaScript.

Anchorage, Ak, Us

• Using Ticketing Service• Troubleshoot on-site problems & perform daily safety inspections• Switching out and updating hardware & software• Website QA for content management• Helped students, faculty & staff with the active directory system, login issues.