A few shifts defined the security landscape in 2021, and most of them trace back to how quickly organizations changed how and where they worked. The pandemic-driven move to remote operations happened faster than most security programs were built to accommodate, and a lot of the trends below are really the same underlying story showing up in different parts of the environment: more devices, more cloud footprint, more people working outside the perimeter IT actually controls, and less time for a stretched team to keep pace with all of it at once.
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A growing IoT footprint meant more connected devices than most IT teams had a full inventory of, each one a potential entry point. Smart building systems, networked printers, badge readers, and even office equipment quietly picked up network connectivity without going through the same procurement or security review as a laptop or server. Many shipped with default credentials that never got changed, and a device nobody remembers deploying is a device nobody is patching.
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Ransomware kept climbing, helped along by cryptocurrency payments that made extortion harder to trace. The attacks also became more targeted and more sophisticated, shifting from opportunistic mass campaigns toward specific organizations chosen because they could least afford downtime, with attackers increasingly threatening to publish stolen data even when a victim could recover from backups, adding a second point of leverage beyond simple encryption.
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Cloud misconfigurations became a favorite target, as fast cloud adoption outpaced careful setup. Storage buckets left open to the public internet, overly permissive access roles, and default settings that were never tightened for production use all gave attackers a way in that required no exploit at all, just a scan for what was already exposed. Speed of migration was the priority; security review of what got migrated often came later, if at all.
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Legacy systems still running past their support window remained an easy way in for attackers who didn’t need anything sophisticated. Once a vendor stops issuing security patches, every newly discovered flaw in that system stays open indefinitely, and attackers know exactly which platforms fall into that category since the end-of-support dates are public information.
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Remote work widened the attack surface significantly, with phishing and endpoint risk following employees home. Corporate laptops moved onto home networks with far less oversight than an office environment, often sitting alongside personal devices and smart home gadgets with their own unpatched vulnerabilities. Attackers adjusted their phishing themes accordingly, leaning into remote work and collaboration tool lures that employees were primed to trust.
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App based multi factor authentication started replacing SMS codes as organizations recognized text message verification wasn’t as strong as it seemed. SMS codes can be intercepted through SIM swapping or basic network attacks, while an authenticator app ties the second factor to a specific device rather than a phone number, closing off one of the more common ways attackers were bypassing MFA.
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Privacy regulation pushed encryption and data handling improvements as compliance requirements caught up with how much personal data companies were collecting. Organizations that had treated data protection as a technical nice-to-have found themselves needing a documented, auditable answer for how personal data was stored, encrypted, and disposed of, not just a general assurance that “security” was handled.
None of these trends were really new in isolation. What made 2021 different was how many of them compounded at once, at a moment when a lot of organizations had a smaller, more stretched security team than the moment called for. A wider device footprint, a workforce operating outside the office perimeter, cloud environments still being tuned for production, and legacy systems nobody had gotten around to retiring all landed on the same internal teams at the same time, and most of those teams weren’t sized for it.
For an IT Director, the practical takeaway wasn’t any single item on this list. It was that the list itself kept growing faster than the resources allocated to cover it, which is the same pressure that shows up again every time the environment changes quickly: a merger, a new office, a rushed cloud migration, a sudden shift to remote work. The organizations that came through 2021 in the best shape weren’t necessarily the ones with the newest tools. They were the ones that already had visibility across the whole environment, so a new device, a new cloud account, or a new remote endpoint got folded into monitoring and patch management as a matter of routine rather than discovered months later during an incident.
A 24/7 Managed SOC is built for exactly that compounding: one team watching all of it continuously, instead of a stretched internal team catching pieces of it. Continuous coverage matters most precisely when the number of things worth watching goes up faster than the headcount available to watch them, which is exactly the position a lot of IT teams found themselves in.
Related reading: AI in Cybersecurity · Top 10 High Profile Cybercrimes in 2021