Discover and read the best of Twitter Threads about #sysadmin

Most recents (8)

Fluency in #terminal #scripting is a skill often neglected and considered archaic, but it improves your flexibility and productivity as a #SysAdmin in obvious and subtle ways.
Let's start a thread about #bash scripting with #EnableSysadmin support...
#Linux
Why settle for boring #Bash? You can customize every aspect of your shell and this article gets you started. red.ht/2U62qAz via #EnableSysadmin
How to manage your Linux command history red.ht/2KnrMrv via #EnableSysadmin by @kenhess . Taking the mystery out of your Bash history.
Read 16 tweets
La info de ayer te desperto el bichito de meterte en #ciberseguridad? ¿Querés ser hacker? te cuento un poco de como arranque y algunos consejos para que logres progreso y te vayas enamorando. En el hilo anterior mencione aprender de sistemas operativos. Acá hay principalmente 2
Sé que estas pensando! sí! #Mac y #Windows, pero NO. Me refiero a #linux y a #windows. otro día hablamos de Mac. Es importante que conozcas a detalle como funcionan estos sistemas operativos. Para esto te podes bajar #virtualbox y crear dentro una virtual machine con un @ubuntu
y otra con #windows10 o el que tengas licencia. Hay que entender como funciona por dentro, cual es el tipo de file system que utiliza cada uno, porque se utilizan permisos, que tipo de archivos hay en cada directorio, que hacen esos archivos? cuales son ejecutables y cuales
Read 16 tweets
#uk #tier5 #lockdown #mondaythoughts.
The amount of companies in #London that suffer #CyberAttack|s is unprecedented.
#hackers were preparing for months. #scoping, network exploration, #SocialEngineering was employed months. #zoommeetings and #email led to bad communication.
1/
#IT/#redteam/#BlueTeam|s etc are not in proper collaboration. People do not know what to do and what are their roles or which tools they need to use.
So far the #Ransomware demands are crazy and the worse is the #databreach leading to #intellectualproperty theft.
2/
Due to #COVID19 #MutantStrain and #londonexodus, working from home has been intensified but lessons from the previous #lockdown on #secure access failures were not learned. #infosec community is still trying to survive.
People have no funds to invest in #cloud infrastructure.
3/
Read 19 tweets
⚠️URGENT⚠️

Hackers exploit #Solorigate supply-chain backdoor in #SolarWinds enterprise monitoring software to breach US Treasury, Commerce Department, other government agencies, and cybersecurity firm #FireEye.

Details: thehackernews.com/2020/12/us-age…

#infosec #cybersecurity #sysadmin
Citing unnamed sources, media said the latest cyberattacks against #FireEye and U.S. government agencies were the work of Russian state-sponsored #APT29 or Cozy Bear #hacking group.
According to FireEye, attackers tampered with a #software update released by #SolarWinds, which eventually led to the compromise of numerous public and private organizations around the world with #SUNBURST backdoor.

thehackernews.com/2020/12/us-age…

#infosecurity Image
Read 4 tweets
{Updated} Learn how to configure or control outgoing address when using Postfix MTA with ISP smarthost or AWS SES on your Linux or Unix server cyberciti.biz/tips/howto-pos… #sysadmin
This post was originally published in 2006. I update older pages/tutorials for updated material. It is a cumbersome process and will keep doing as long as working as a sysadmin. After that, someone else will take over. Image
You can even say I was original StackOverflow for the Linux and Unix-like system ;) LOL.
Read 3 tweets
So you want to get into Cyber Security? I’ll tell you how
Cyber security is about protecting data, networks and devices from unauthorised access
Most people are currently working remotely.

This increases the risk of security incidences as companies' data is now accessible over home networks with little or no security add ons
Read 99 tweets
A little late here’s my first tech thread.

A few tools I use that may help my fellow Windows Admins & Engineers.

Some you may know and some you may not.

#DigitalSpen #SysAdmin #SysOps
#WindowsServer #BlackTechTwitter
1. IAS Viewer Log Viewer by Deep Software

Helps with monitoring radius/NPS logs. Makes reading those radius logs ALOT easier to troubleshoot issues.

Saved me more than a couple times dealing with wifi authentication issues.
deepsoftware.com/iasviewer/
2. TreeSize by Jam-Software

Scans disk space and makes it easy to find what folders or files are consuming too much space.

I use this on a weekly basis. Finding overgrown logs or users storing large video files became a lot easier.

jam-software.com/treesize_free/
Read 6 tweets
.@stahnma talking about legacy software circleci.com/blog/the-littl… (1/n)
TIL there's a term called as Newton’s Third Law of #sysadmin, which says “a system untouched will remain online.” Where he elaborates that this isn't true after a point. (2/n)
There's another interesting point which he tries discussing is what happens to the legacy code when it doesn't have a clear owner? Who maintains it and how to go about trying to solve that problem. (3/n)
Read 6 tweets

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