Network security is about controlling what moves between systems and keeping the wrong traffic out. These articles cover it from the infrastructure side, where firewalls, segmentation, and pen testing actually live, drawn from two decades running enterprise networks.
CybersecurityI have four Alexa devices. The screen models push ads, they answer when nobody called them, and one took over a device I never connected. Here are the settings I'd change today and the rooms where a smart speaker never…
CybersecurityHackers stole 40 million cards from Target through the login of its heating and cooling contractor, and Target's own alarms went unanswered. Part eleven of a series on attacks that beat isolation.
CybersecurityA USB drive from a parking lot crossed the Pentagon's air gap in 2008 and took 14 months to remove. The cleanup created US Cyber Command. Part eight of a series on attacks that beat isolation.
CybersecurityNatanz was air-gapped, and Stuxnet crossed it anyway, on USB drives, stolen certificates, and four unknown flaws. Part three of a series on attacks that beat isolation.
CybersecurityIn one night in 1988, a self-copying program jammed a tenth of the internet and ended the assumption that the network could be trusted. The first article in a series on attacks that beat isolation.
AuditsOur PCI auditor looked at a legacy database connection we could not afford to rebuild and said: wrap it in a VPN. That sentence introduced us to mitigating controls, turned a six-figure project into a configuration change, and taught me…
CybersecurityThe fake UPS email arrived five minutes after my real eBay order, pixel-perfect, and I clicked it. Then the screen turned red: infection stopped, infection stopped, infection stopped. That is what layers are for, because the one filter that always…
BackupsCoffee in hand, you open an email demanding $500 in Bitcoin to unlock your photos, tax records, and three-year novel, and yesterday's urgent delivery notice was the invitation. It happens thousands of times a day, and the habits that stop…
BackupsAttackers rarely come through the firewall; if they do, you were sloppy, because the firewall is the easy part. The real vectors are social engineering and the insider, and the insider is the most common and most overlooked. Two decades…
AuditsI ran PCI compliance at a national retailer for twenty years and passed every audit, then started ghostwriting books for the security leaders who live this work. Here is what nobody admits: passing an audit and being secure are not…
CareersCybersecurity leader Sixto Bernal on treating security as part of sales and building a career on business awareness.
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