Hackers tamper with refrigeration units in European supermarkets, setting temperatures to +50 °C
Attackers have interfered with the temperature controls of refrigerators and freezers in supermarkets across multiple European countries. In several stores the settings were changed to +50 °C, creating an immediate risk of food spoilage.
The affected networks are located in Sweden, Belgium, Luxembourg, and Estonia. The Estonian incident was described to ERR by Jann Mutso of refrigeration-systems manufacturer Kitman Coldtech.
Mutso stated that the intruders obtained access to a computer managing an older-generation Danfoss refrigeration controller. The tampering was identified and halted within roughly ten minutes, so no products were lost. He added that attackers specifically seek out sites still running outdated, unpatched controllers.
These legacy systems are frequently connected to the internet to allow remote servicing and monitoring. While convenient for technicians, the exposure leaves the equipment vulnerable to external interference.
Swedish retailers ICA and Coop have reported comparable problems. In October, comparable attacks struck French supermarket chains and caused significant product damage.
Related articles
Rostelecom Refactors InfoSec Careers: Matching Employee Skills to Evolving Business Priorities
Rostelecom's information security block developed a systematic approach to reassess employee expertise and redirect talent to new roles when business structures change rapidly. In one case, an architect hired for a specific team was reassigned after the unit was disbanded, initially moving to a similar position that did not fully align with his broader competencies. HR-business partner Olga Lapshina examined the specialist's full background, including prior work in audits, methodology development, regulatory documentation, university teaching, and scientific research, plus strong mentoring abilities with younger staff. These skills matched the needs of the methodology department, leading to a transfer supported by an individual development plan and a mentor via the internal Tochka Rosta platform. Within two months the employee contributed improvements that accelerated preliminary InfoSec audits by 30 percent and risk assessments by 20 percent while expanding threat scenario coverage by 10 percent. The initiative demonstrates Rostelecom's emphasis on horizontal career movement and retention of experienced professionals through structured career tracks.
How to Avoid Becoming the Hero of 'My Program Deleted 800 GB': Safe Recursive Deletion in Bash and Python
A recent Habr article examines dangerous patterns in recursive file deletion scripts that have caused massive data loss incidents, including an 800 GB wipe triggered by Telegram Desktop on Windows. The piece analyzes classic mistakes such as empty variables in rm commands and extra spaces that turned single paths into multiple destructive arguments, referencing the 2015 Steam Linux bug and the 2011 Bumblebee installer error. It provides hardened Bash templates using set -euo pipefail, ${VAR:?} checks, realpath validation, and --one-file-system flags to prevent deletion of forbidden directories or symlinked targets. The Python section introduces a safe_rmtree wrapper that enforces root boundaries, rejects symlinks, uses resolve(strict=True), and checks shutil.rmtree.avoids_symlink_attacks before proceeding. Additional recommendations include dry-run modes, marker files, temporary directory usage, and logging to make deletion operations auditable and reversible where possible.
AmneziaWG Container for MikroTik Routers Delivers Top Performance Six Months After Launch
A developer released an AmneziaWG container for MikroTik devices in February 2026 and has since added major improvements in speed, protocol support, and stability. The lightweight container leverages the router's native WireGuard implementation for cryptography while handling AmneziaWG obfuscation in software. Performance now reaches 250-350 Mbit/s on models such as Hap Ax3 and RB5009B after switching to C code and increasing buffer sizes with RouterOS 7.24. New features include server mode for connecting multiple MikroTik devices, random port hopping, IPv6 support, dynamic DNS, and offline configuration. The project survived an early GitHub ban caused by test scripts and has grown to over 370 stars while remaining fully offline and privacy-focused.
Building Resilient DoH Failover on MikroTik RouterOS to Handle Unreachable Cloudflare Responses
A network administrator encountered a persistent issue in a branch office where pages like Tailwind CSS CDN failed to load despite valid DNS responses from Cloudflare DoH. The problem stemmed from unreachable IP addresses such as 8.6.112.0 and 8.47.69.0 returned by the resolver, which RouterOS treated as healthy because it only checked for valid IP types rather than route reachability. RouterOS supports only a single active DoH upstream via the use-doh-server parameter, requiring custom scripting for failover between multiple endpoints like Cloudflare and dns.google. The solution involved static DNS entries for bootstrap addresses, certificate trust anchors including SSL.com TLS ECC Root CA 2022, and a health monitor script that probes using DNS-JSON API calls instead of switching the resolver directly. Multiple iterations addressed issues like cache-based false positives, plain DNS fallback risks from provider spoofing, and clock validation to prevent certificate failures. The final implementation uses thresholds for failure and recovery to avoid flapping and ensures post-switch verification before committing to a backup endpoint.