Category: IT-Security

mj12bot hammer mediawiki

Here some IP’s of some Botnet Servers of mj12bot.com: the Botnet ignores robots.txt and hammers on Mediawiki’s! A sorted output of a Log done with :   cat /var/log/apache2/other*.log|grep MJ | awk '{ print $2 }' | sort | uniq -c | sort -n Output for ufw Firewalls: 162.210.196.97 144.76.3.131 148.251.195.14 5.9.158.195 173.208.157.186 176.31.255.65 178.63.34.189 […]

5G Mobile Network opens Pandora’s Box

5G will it make possible to attack mobile Devices and Cars 10 times faster Users will not recognize attacks or uploaded data the wider data bandwith will it make possible to attack much more efficient Remark: checkout if you really need this mobile network, cause slower is sometime safer against automated tools slower mobile network […]

Firefox Stop Home Calls

During my last Network Monitoring found out that MANY of “free” Software calls home permanent Article: https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections .. if you want to be safe, block all OUTGOING Traffic by a Firewall or local DNS Server and use a Proxy with Auth Mechanism!

Major Bug: UFW stopped thru logrotate

On Debian Sid i have seen that ufw service is stopped on logrotate!! Its a bad known bug! Workaround: Set all Services like Dovecot, Postfix to listen on LOCALHOST (127.0.0.1) if not needed over Internet Enable ONLY encrypted AUTH (Login) to Postfix! (TLS 1.2) Disable unneeded Services ! like Samba, FTP… move config from /etc/logrotate.d/ufw […]

Goodby Smartphones

Today iam going offline with any of my Smarthones for Testing. Why? all current Smartphones based on nonfree Hard and Software less patched Hackers can remote force install Trojans as Updates (especially Stores by gov order) non rooted devices are black boxes rooted Images or Tools as Workarounds are often not published in which way […]

Health Status Data on Cloud Services

From the current News we hear that insurances offers humans to save the complete health status at a Cloud based App. This is by DEFAULT insecure! Smartphones get less OS Security Updates by Manufacter Users do NOT know to handle Updates Users can’t update Firmwares by default Apps most located at App Stores (Google, Apple) […]

Apache MEMCACHED UDP Protection

Current a lot of sites blogging about memcached attacks on Servers here some details: Memcached Servers need a installed and running Service called “memcached” Websites need a php-plugin like php7.0-memcached to connect via API to the memcached Service The Memcached Service uses a own Config File at debian /etc/memcached.conf By default it MUST listen to […]

ENFORCE Google to DuckDuckgo SEARCH

If you want to enforce the use of DuckDuckgo.com instead of google.com do: Edit at the PC the “hosts” File on: Linux /etc/hosts Windows C:\Windows\System32\drivers\etc insert at last: 54.229.105.92 google.com #ip of duckduckgo or 176.34.131.233 54.229.105.203 google.com #ip of duckduckgo 176.34.131.233 bing.com #ip of duckduckgo or 176.34.131.233 176.34.131.233 yahoo.com #ip of duckduckgo or 176.34.131.233 ..reboot […]

Nextcloud Owncloud Opensource Risk’s

If you are current using Nextcloud / Owncloud or other PHP-Kits for File Handling you should know these remarks: Based on this Article You must know: Details of Security about your current used PHP Versions (7.X) Details of your used Database Version (MySQL..) Details of hardened OS and Webserver Version (Apache,Firewall,fail2ban,file policys, selinux, apparmor filter) […]