Geoffrey Wenger

Email Geoffrey at geoff@jenisystems.com

Geoffrey has decades of hands-on work across IT, software development, and cybersecurity, and he brings clear, technical insight to every article. His experience includes building and maintaining secure networks, writing and reviewing production code, hardening endpoints, and responding to real incidents. He has led projects that span Microsoft 365 and Google Workspace administration, identity and access control, and cloud adoption with a focus on reliability and risk reduction. He holds two bachelor’s degrees in IT, a business degree, and a master’s in Cybersecurity and Information Assurance. His writing turns complex systems into actionable steps that help readers fix issues fast and strengthen security over time.

Articles published:

Secure DNS network connecting home and business devices through encrypted DNS traffic, protective filtering, trusted resolvers, and blocked malicious connections.

Secure DNS for Safer Browsing and Privacy at Home and in Business

Most website visits depend on a process you never see. Before a browser can reach a site,[…]

Calix router vulnerability concept showing a home router connected to laptops, cameras, storage, a printer, and smart devices at risk from UPnP port forwarding exposure

Calix Router Vulnerability Could Expose Your Home Network Devices

Your home router is supposed to keep the public internet separate from the computers, cameras, storage drives,[…]

Mac laptop with a home router and connected devices showing the network risk tied to the macOS Screen Sharing flaw CVE-2026-65400

Mac Screen Sharing Flaw Could Let Attackers Bypass Authentication

A newly patched macOS vulnerability shows why computer security is about more than malware, stolen passwords, or[…]

TP-Link Omada controller connecting business Wi-Fi access points, switches, cameras, payment terminals, computers, and mobile devices while a malicious connection targets the centrally managed network

TP-Link Omada Vulnerabilities Put Small Business Networks at Risk

A small business may have several routers, switches, and Wi-Fi access points, but those devices may all[…]

Networked office printer with connected devices and data security risks

Why Your Office Printer May Be a Major Cybersecurity Privacy Risk

Small businesses protect laptops, email accounts, passwords, and cloud software, yet the office printer often gets little[…]

AI-powered cyberattack targeting businesses, cloud systems, data files, and government networks

AI-Powered Cyberattacks Are Changing Security for Everyone

AI-powered cyberattacks are no longer a distant concern reserved for large enterprises or government agencies. Recent abuse[…]

DDoS attack traffic overwhelming business websites, servers, and network security systems during a service outage

DDoS Attacks, Business Downtime, And Practical Network Defense Tips

DDoS attacks can take websites, apps, servers, or business networks offline by flooding them with more traffic[…]

Supply chain attack risk with trusted vendors, software updates, cloud systems, hardware, and cybersecurity monitoring

Supply Chain Attacks: How Trusted Vendors Expose Your Systems

Organizations can invest heavily in firewalls, endpoint protection, access controls, and identity management, yet still be exposed[…]

Free computer security tools for antivirus protection, password safety, backups, encryption, firewalls, and safer browsing

Best Free Security Tools Every Computer User Should Have

Computer security is crucial, with threats from hackers and malware constantly present. Fortunately, effective free tools exist[…]

Advanced persistent threat moving through a business network as security controls detect and contain the intrusion

Advanced Persistent Threats: How to Detect and Contain Intrusions

Advanced persistent threats rarely arrive with flashing warnings or a sudden system crash. They slip inside, watch[…]