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How to Secure My Network
security advisory intrusion detection
security advisory intrusion detection A compromised Linux server can continue running malware long after the initial intrusion. One of the most common persistence techniques is a malicious cron job that silently downloads payloads, restarts malware, or re-establishes attacker access every few minutes. This guide shows how to identify suspicious cron entries, preserve forensic evidence, remove unauthorized scheduled tasks, and verify that no additional persistence mechanisms remain. . What Should You Save Before Removing Cron Jobs...
Jun 09, 2026
How to Secure My Networkaccess control Linux administration
access control Linux administration Most SSH hardening advice ends at the same recommendation: Disable password authentication and use SSH keys. . That's good advice. It removes entire classes of attacks, including password spraying, credential stuffing, and brute-force attempts against exposed servers. The problem is what happens next. Many administrators treat SSH keys as the finish line when they are really the beginning of the hardening process. Attackers rarely care whether they obtained access with a password or a private...
Jun 05, 2026
How to Secure My Networksecurity advisory remote access
security advisory remote access Most of the time, nobody notices. SSH authentication succeeds, no alerts are generated, and the connection looks exactly the way it did the day the key was installed. That's part of the problem. . When security teams investigate unauthorized access on Linux systems, they often focus on passwords, exposed services, or vulnerable software. Trusted access receives less attention. Yet a single forgotten or unauthorized SSH key can provide the same access as a legitimate user while attracting very...
Jun 03, 2026
How to Secure My Networkintrusion detection application security
intrusion detection application security The wrong IPS rule can look like a security fix right up until it becomes an outage. . On Linux systems, detection and prevention are often discussed together, but they do not carry the same operational risk. One tells admins that something suspicious happened. The other can decide whether traffic is allowed to continue. That is why IDS vs IPS is not just a definition to memorize. It is a deployment decision about where to monitor, where to block, and how much confidence a team needs before...
Jun 01, 2026
How to Secure My Networkunauthorized access security techniques
unauthorized access security techniques Exposed SSH servers are continuously hammered by brute-force attacks, password spraying, credential stuffing, and recycled passwords from infostealer dumps. Attackers rotate usernames, test weak credentials, and probe for anything that gives them initial access. The logs usually look messy long before the compromise happens. . The difficult part is separating harmless failures from actual intrusion activity. One failed login from an internal workstation rarely matters. Repeated failures...
May 28, 2026
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security practicespassword managementcommand lineChecking Password Strength In Linux With Command Line Techniques
We already posted a brief guide about - how to generate a strong password in Linux a while ago. Now, we are going to find out if the generated password is really strong or not. In this short tutorial, we will see how to check the password complexity in Linux from commandline. . Before going further, here are some useful tips to all those who wants to keep their system safe. Never ever use the same password for different Email accounts, ssh/ftp/sftp logins. If a hacker managed to crack your password, s/he literally have access to all accounts. So, generate and use different unique password for each account. A good password should be the combination of letters, numbers, special characters. Make sure your password has at least 12 or more characters. Check our guide how to force users to use strong password . Don't save your passwords online. Use good password manager or memorize them. Consider two factor authentication if possible. More importantly, don't use valid answers for security questions, eventually with enough data breaches, hackers will have all the answers . The common security questions are father's maiden name, school name, favorite pet's name, last name of first girlfriend/boyfriend, etc. Since much of the time these are stored in plain text on websites someone can gain access to many of your accounts by knowing these answers. Instead, put in mixed letters/numbers as answers and use a secure password manager to keep track of your answers. I came across this tip on Reddit . So I thought sharing it here would be helpful to someone. . In Linux, evaluate password strength with `pam_pwquality` for complexity, use `pwgen` to create secure passwords, and adopt 2FA and updates for enhanced security. Password Complexity, Linux Security, Account Safety, Password Management, Strong Passwords. . Brittany Day
Feb 11, 2023
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