Primary focus
Server and network hardening, vulnerability response, patch prioritization and infrastructure security review
Editorial profile
Marcin Pocztowski
Marcin Pocztowski is the owner of MMPS, an IT services practice covering Linux, Unix and Microsoft Windows Server administration, virtualization, Juniper/Cisco/Mikrotik networking, web application support, hosting, backup, data recovery and security audits. His HackWatch contributor scope focuses on infrastructure hardening, vulnerability response context, patch prioritization and practical remediation review.
HackWatch presents Marcin as a real named contributor, not as an invented editorial persona. The public MMPS website lists administrator and networking work across Linux/Unix, Microsoft Windows Server, Hyper-V, VMware, Oracle VM, Proxmox, Juniper, Cisco and Mikrotik environments, plus security-audit services. Certificate links below point to certificate scans published on Marcin's public MMPS website; HackWatch does not relabel them as issuer-hosted badge pages when an issuer directory or Credly-style verification URL is not available.
Editorial transparency. This is a real named contributor profile. HackWatch ties the authority signals on this page to public MMPS evidence, visible certificate links and source-backed editorial review rather than planned credentials or unverified employment claims.
Editorial responsibility
This profile organizes HackWatch coverage by topic, documents who maintains the coverage area and makes the related source standards visible to readers.
Verified credentials
Red Hat Certified System Administrator (RHCSA)
Issuer: Red Hat
Juniper Networks Certified Internet Specialist - Enterprise Routing (JNCIS-ER)
Issuer: Juniper Networks
Juniper Networks Certified Internet Specialist - JUNOS Security (JNCIS-SEC)
Issuer: Juniper Networks
Microsoft Certified IT Professional (MCITP)
Issuer: Microsoft
Cisco Certified Network Associate (CCNA)
Issuer: Cisco
CompTIA Security+
Issuer: CompTIA
Juniper Networks Certified Internet Associate - Enterprise Switching (JNCIA-ES)
Issuer: Juniper Networks
Microsoft Certified Systems Engineer: Security on Windows Server 2003 (MCSE+S)
Issuer: Microsoft
Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure (MCTS)
Issuer: Microsoft
Building Scalable Cisco Internetworks exam 642-901 (BSCI)
Issuer: Cisco
Coverage area
Server and network hardening, vulnerability response, patch prioritization and infrastructure security review
Expertise & workflow
This section lists the working methods, frameworks and review disciplines used now by this named reviewer. Formal certifications appear only after public issuer verification for a real named contributor.
Core competencies & frameworks
This profile lists current public credentials and working domains visible on Marcin Pocztowski's MMPS website. It avoids planned or target credentials as authority signals.
- Linux, Unix and Microsoft Windows Server administration
- Hyper-V, VMware ESX/ESXi, Oracle VM and Proxmox virtualization operations
- Juniper, Cisco and Mikrotik network design, deployment and administration
- Security-audit and hardening review for business IT environments
- Vulnerability triage using affected-version, patch-status and exposure context
Editorial training track
- HackWatch source verification workflow for advisories, CERT notices and researcher reporting
- Incident update and corrections procedure for evolving cyber incidents
- Editorial standards for practical response guidance, canonical coverage and user-first alert maintenance
- Infrastructure-focused vulnerability review using CISA KEV, NVD and vendor advisory evidence
- Patch-window, mitigation and compensating-control review for server and network environments
Editorial methodology
- Separate research-only findings from vulnerabilities with credible exploitation paths, exposed infrastructure impact or urgent operational risk.
- Surface affected products, fixed versions, mitigation deadlines and reader-first patch actions in vulnerability and infrastructure alerts.
- Tie remediation advice to vendor advisories, CISA KEV status, NVD context and practical server or network exposure where available.
Trusted sources monitored
This profile links its public methodology to official and primary sources monitored for corroboration. These are reference links, not personal social profiles, and they do not replace verified contributor identity links.
HackWatch Editorial Policy
Internal methodology page covering sourcing, corrections, transparency and update standards.
Open methodologyCISA Known Exploited Vulnerabilities
Authoritative exploitation-priority catalog used when judging urgent patch and mitigation coverage.
Open official sourceNational Vulnerability Database
NIST vulnerability database used for CVE context, affected products and severity references.
Open official sourceCERT/CC Vulnerability Notes
CERT Coordination Center notes used for vulnerability coordination and remediation context.
Open official sourceMicrosoft Security Response Center
Vendor security update source used for Microsoft vulnerability and patch-status verification.
Open official sourceGitHub Advisory Database
Open-source vulnerability advisory database used for package and dependency risk checks.
Open official sourceWhat this editor is responsible for
Owns high-priority vulnerability alerts where readers need fast clarity on exposure, fixes and compensating controls.
Keeps exploit reporting tied to real version guidance, patch status, infrastructure exposure and practical triage rather than abstract severity labels.
Strengthens internal linking between vulnerability alerts, exposure tools and response playbooks when a flaw becomes operationally important.
Editorial standards applied by Marcin Pocztowski
- Do not frame a vulnerability as urgent without showing affected products, exploitation evidence or meaningful exposure context.
- Prefer one maintained remediation-focused article per vulnerability cluster over multiple short rewrites of the same advisory cycle.
- Update alerts promptly when fixes, mitigations, proof-of-concept details or exploitation status materially change.
Coverage areas
Server and network infrastructure administration
This topic sits inside Marcin's public editorial remit at HackWatch and informs how alerts, explainers and recovery content are maintained.
Known exploited vulnerabilities and patch prioritization
This topic sits inside Marcin's public editorial remit at HackWatch and informs how alerts, explainers and recovery content are maintained.
Juniper, Cisco, Mikrotik and Windows/Linux exposure context
This topic sits inside Marcin's public editorial remit at HackWatch and informs how alerts, explainers and recovery content are maintained.
Security-audit and infrastructure hardening review
This topic sits inside Marcin's public editorial remit at HackWatch and informs how alerts, explainers and recovery content are maintained.
Recommended tools and recovery pages
Free Phishing Link Checker and Domain Intelligence Report
The URL checker expands a suspicious link into a practical domain intelligence report with structure, redirects, DNS, TLS, ASN, hosting and registration context.
Open pageRansomware Triage and Decryptor Finder
The ransomware triage workflow helps readers isolate affected systems, document the incident, check for available decryptors and avoid panic-driven mistakes during the first response window.
Open pageIncident Report Intake
The incident intake form helps HackWatch collect early reader signals so new phishing and fraud clusters can be reviewed faster and escalated into coverage.
Open pageLatest alerts by Marcin Pocztowski
Recent coverage by Marcin Pocztowski
Firefox and Tor Browser IndexedDB Vulnerability Exposed Hidden User Identifiers
Source date: Apr 27, 2026 | Sources: 2A medium-risk vulnerability affecting Firefox and Tor Browser allowed malicious actors to access hidden identifiers stored via IndexedDB, potentially compromising user anonymity and privacy. This article consolidates multiple reports to provide a comprehensive analysis, detailing the nature of the flaw, affected users, and concrete mitigation steps for 2024 and beyond.
Read articleCISA Alerts on Multiple Actively Exploited SimpleHelp Vulnerabilities in Remote Support Software
Source date: Apr 25, 2026 | Sources: 3The Cybersecurity and Infrastructure Security Agency (CISA) has issued a critical warning about two actively exploited vulnerabilities in SimpleHelp remote support software. These flaws enable attackers to bypass security controls, granting unauthorized access to corporate networks. This article consolidates multiple corroborating sources to provide a comprehensive analysis of the threat, affected parties, and actionable steps to mitigate risk in 2026.
Read articleApril 2026 Cybersecurity Landscape: Major Vulnerabilities, AI Threats, and Ransomware Evolution
Source date: Apr 24, 2026 | Sources: 2In April 2026, multiple high-impact cybersecurity developments emerged, including AI-powered mass vulnerability scanning by Chinese firms, critical hardware flaws in Qualcomm Snapdragon chipsets, a new Firefox browser privacy exploit, and the rise of the ransomware group The Gentlemen. This article consolidates verified reports from Red Hot Cyber and Bloomberg to provide a comprehensive overview of these threats, who is affected, and actionable steps to protect yourself and your organization.
Read articleMicrosoft’s April 2026 Security Update Addresses 165 High-Risk Vulnerabilities Across Multiple Products
Source date: Apr 24, 2026 | Sources: 2In April 2026, Microsoft released a comprehensive security update patch resolving 165 vulnerabilities across Windows, Office, SQL Server, Visual Studio, .NET Framework, and Azure. This critical update includes fixes for high-risk issues such as privilege escalation and remote code execution, impacting millions of users and enterprises worldwide. This article consolidates multiple sources to provide actionable insights on the vulnerabilities, affected products, mitigation steps, and how users and organizations can secure themselves against exploitation.
Read articleCritical Cybersecurity Incidents in April 2026: From Qualcomm Chipset Flaws to Water Facility Malware
Source date: Apr 23, 2026 | Sources: 3April 2026 saw a surge in high-risk cyber threats including a severe Qualcomm Snapdragon hardware vulnerability, a Linux privilege escalation flaw dubbed Pack2TheRoot, targeted malware attacks on Israeli water treatment plants, and unauthorized data access at Booking.com. This article consolidates multiple verified reports to provide a comprehensive analysis of these incidents, their impact, and actionable steps for individuals and organizations to protect themselves in the evolving cyber threat landscape.
Read articleCISA Adds CVE-2026-39987 Marimo Remote Code Execution Vulnerability to Known Exploited Vulnerabilities Catalog
Source date: Apr 23, 2026 | Sources: 2On April 23, 2026, the Cybersecurity and Infrastructure Security Agency (CISA) expanded its Known Exploited Vulnerabilities (KEV) Catalog by adding CVE-2026-39987, a high-risk remote code execution vulnerability in the Marimo software. This addition underscores the ongoing threat posed by actively exploited vulnerabilities and highlights the urgent need for organizations, especially federal agencies, to prioritize remediation efforts. This article consolidates multiple corroborating sources to provide a comprehensive analysis of the vulnerability, its impact, and actionable steps for mitigation.
Read articleCritical Path Traversal Vulnerability CVE-2026-6074 in Intrado 911 Emergency Gateway Exposes Emergency Services to High-Risk Exploitation
Source date: Apr 23, 2026 | Sources: 1A critical path traversal vulnerability (CVE-2026-6074) affecting multiple versions of the Intrado 911 Emergency Gateway (EGW) has been disclosed, allowing unauthenticated attackers with network access to read, modify, or delete files via the management interface. This flaw poses a severe risk to emergency services infrastructure worldwide. This article consolidates official CISA advisories and vendor updates, detailing the vulnerability, affected systems, mitigation steps, and best practices for securing critical emergency response networks in 2026 and beyond.
Read articleCritical Vulnerabilities in SpiceJet Online Booking System Expose Passenger Data Globally
Source date: Apr 23, 2026 | Sources: 1Two high-severity security flaws (CVE-2026-6375 and CVE-2026-6376) in SpiceJet's online booking system allow unauthorized access to passenger personal and booking information. These vulnerabilities enable attackers to enumerate passenger records and retrieve sensitive details without authentication, posing significant privacy and security risks worldwide. This article consolidates official findings from CISA and offers actionable steps for affected users and organizations to mitigate exposure.
Read articleCritical Microsoft Defender Zero-Day Vulnerability Exploited to Gain System Privileges
Source date: Apr 23, 2026 | Sources: 2A recently discovered zero-day vulnerability in Microsoft Defender is actively exploited by attackers to access the SAM database, extract NTLM hashes, and escalate privileges to SYSTEM level. This high-risk flaw threatens Windows environments globally, demanding immediate attention from security teams and end users. This article consolidates verified information from multiple sources, details the impact, and provides actionable guidance on mitigation and protection strategies in 2026.
Read articleCritical Flaws in Serial-to-Ethernet Converters Threaten Industrial and Healthcare Infrastructure
Source date: Apr 23, 2026 | Sources: 2Serial-to-Ethernet converters, widely used to connect legacy serial devices to modern TCP/IP networks in critical sectors like industrial control, healthcare, and retail, harbor thousands of vulnerabilities. A comprehensive analysis by Forescout reveals outdated firmware with numerous exploitable flaws, enabling attackers to remotely control mission-critical equipment. This article consolidates multiple sources to explain the risks, real-world attacks, affected parties, and actionable steps to mitigate this high-risk threat in 2026.
Read articleAnthropic’s MCP Vulnerability Exposes Critical Risks in AI Agentic Infrastructure
Source date: Apr 22, 2026 | Sources: 1A critical vulnerability in Anthropic’s Model Context Protocol (MCP) SDK has exposed millions of systems to remote code execution attacks, compromising sensitive data and internal resources. This structural flaw, affecting multiple programming languages and widely adopted AI agent frameworks, highlights the urgent need for visibility and security controls in MCP servers. Organizations deploying AI agents must urgently assess their MCP deployments and implement comprehensive monitoring to prevent exploitation.
Read articleNew High-Risk Cisco Catalyst SD-WAN Manager Vulnerability Added to CISA’s Known Exploited List
Source date: Apr 21, 2026 | Sources: 2A newly discovered vulnerability in Cisco Catalyst SD-WAN Manager has been added to the CISA Known Exploited Vulnerabilities Catalog amid active exploitation in the wild. This critical flaw demands immediate attention from network administrators and security teams to apply patches and mitigate potential attacks targeting enterprise SD-WAN infrastructures. This article consolidates verified information, outlines affected parties, and provides actionable guidance on securing affected systems.
Read articleEditorial contact and accountability
Questions about sourcing, factual corrections or article updates should go through the editorial contact or the dedicated corrections channel. HackWatch keeps named reviewer profiles public so readers and reviewers can see who is responsible for incident coverage and recovery-oriented content.