Thought Leadership
IT experts and users share severe security failures on Reddit — and the lessons they took away for everyday operations.
A discussion on the social media platform Reddit has brought together numerous IT administrators and cybersecurity professionals sharing some of their most impactful real-world experiences. One recurring theme stands out: misplaced trust in automated backup systems. Many administrators describe situations where central backup dashboards displayed flawless green status indicators for months. The software reported successful daily protection of all corporate data.
Only when a real system failure occurred — caused by a sudden hardware breakdown or a targeted ransomware attack — did the true scale of the disaster become visible. When teams attempted to restore the data, recovery processes failed. Backup blocks had silently become corrupted on storage systems, or critical database components had never actually been protected because of incorrect exclusion rules in the configuration.
One IT manager described a scenario in which malware inside the network first compromised online-accessible backup servers unnoticed and deleted all available system images before launching the actual attack against production servers. Because the backups were connected to the same network, they became completely useless. One participant summed up the painful lesson in a single sentence: “A backup only exists once the restore has been successfully tested.”
Security professionals emphasized that data protection without regular, documented recovery drills on fully isolated storage systems does not provide reliable protection against total data loss.
Cybersecurity: How Attackers Bypass Multi-Factor Authentication
Another major topic in the reports was the targeted bypassing of modern security controls through psychological manipulation and technical sophistication. Although multi-factor authentication (MFA) is considered one of the most important security standards, security analysts reported successful attacks that effectively neutralized this protection layer.
A commonly reported scenario is the so-called MFA fatigue push flooding attack. In this method, attackers first obtain employees’ primary passwords through traditional phishing websites.
Since access is additionally protected by an authentication app on the user’s smartphone, the attackers then bombard the victim’s device in the middle of the night with dozens of authentication requests per second. Over time, many users end up approving the login simply due to exhaustion, lack of attention, or the mistaken belief that it is a technical glitch in the company’s systems, just to stop the device from constantly vibrating.
Experts also highlighted the growing threat of adversary-in-the-middle attacks. In these attacks, criminals place a fake login page between the user and the legitimate service. When an employee enters credentials and the short-lived MFA token, the attackers capture the information. They can then steal the valid browser session cookie generated in the background.
With this cookie, attackers can access the company network from virtually any computer worldwide without triggering another password or MFA request.
The discussion makes clear that purely technical barriers are ineffective if employees are not continuously trained to recognize sophisticated fraud techniques. Security experts particularly consider SMS-based authentication codes outdated and insecure due to risks such as SIM-swapping attacks, where criminals hijack mobile phone accounts.
Human Errors and Costly Mistakes with Admin Privileges
The reports also show that major IT infrastructure damage is often not caused by external attackers, but by internal mistakes made under time pressure. Several system administrators shared incidents involving accidentally executing destructive deletion commands in the wrong terminal window.
Administrators frequently had multiple server connections open at the same time. Because the windows looked identical, a destructive command or formatting script intended for an isolated test environment was instead executed on a production server. The result was the immediate and irreversible deletion of active customer databases.
Another widespread issue is the accidental exposure of sensitive credentials, API keys, and cryptographic certificates in public code repositories such as GitHub. During development, programmers often embed these secrets directly into source code instead of storing them securely in separate environment variables.
Once a project is uploaded to a public platform, the damage can be difficult to contain.
Specialized automated bots operated by cybercriminals continuously scan code repositories for exposed cloud credentials. In many documented cases, leaked keys were abused less than three minutes after being published. Attackers immediately used the access to launch extremely expensive high-performance cloud computing instances under the affected company’s account, often to mine cryptocurrency. The resulting financial losses can quickly reach five figures.
Shadow IT and Legacy Systems Create Hidden Security Risks
A recurring structural problem in many corporate networks is forgotten hardware. System administrators report serious breaches originating from outdated devices hidden in server rooms or unauthorized equipment connected by employees without approval from central IT teams. These devices often include simple network storage systems, outdated routers, or smart laboratory and building control equipment installed by individual departments for their own purposes.
Because these devices were not tracked by automated IT inventory tools, they went years without firmware updates or security patches. As a result, they contained publicly known vulnerabilities that were easy to exploit. Cybercriminals actively scan networks for exactly these weaknesses. Once attackers gain control of an overlooked device, they use it as a foothold. From there, they move laterally through the internal network, explore additional systems, and attempt to gain administrative privileges for central domain control.
The discussion participants agree that complete and continuous visibility into every device connected to a network is the essential foundation of any effective cybersecurity strategy.
