Category: Fail

# become root su – root; # rpm based yum install nmap # apt based apt install nmap # find snmp enabled devices # (UDP port 161, can not be tested with telnet (can only do TCP)) nmap -sU -p […]

Not a lot of humans on this planet manage to entertain and educate at the same time. ElectroBOOM does it nicely, one can find him like that: it is just outstanding funny and entertaining… X-D singing with tesla coils: this […]

“In the popular series of wireless keyboards Fujitsu LX390 found two dangerous vulnerabilities. According to researchers from the company SySS, exploitation of vulnerabilities allows nearby attackers to “spy” passwords entered on the keyboard, or even to seize control of the […]

  EDIMAX EW-7612UAn V2 THE ONLY (?) GNU Linux WIFI WLAN Adapter that works OUT OF THE BOX on all GNU Linux systems (ODROID RASPBERRY AND Desktop GNU Linux)   ONLY BUY FROM HARDWARE VENDORS THAT SUPPORT FREE & OPEN […]

spoiler alert: this is work in progress… was told by Adaptec support to upgrade firmware. did not do that yet – because firmware upgrades on production systems are sometimes very risky endeavors. one of the most important features of a […]

monitoring the integrity of a RAID is critical for fast replacement of failed harddisks (ideally one has at least one spare drive already in the machine) if not – it would be great if hard- and software-raid would send a […]

Update: 2020.03 “The newly developed Rowhammer- attack TRRespass can crack the RAM-a security mechanism by many DDR4-DRAM-modules as well as LPDDR4 Chips. Until now, these were considered to be almost immune to Rowhammer attacks.” https://www.com-magazin.de/news/sicherheit/software-hammer-ram-schutz-attackiert-2515621.html Update: 2019.10 Zombieload is back. […]

tested on: Operating System: CentOS Linux 7 (Core) CPE OS Name: cpe:/o:centos:centos:7 Kernel: Linux 4.15.9 Architecture: x86-64 # using vboxmanage –version 5.2.6r120293 ah lovely isn’t it? BSOD Win98 style… errors were NOT the exception, they were THE NORM (and still […]

the best about samba: thanks for samba, it provides users with a fast (of course depends also on harddisk speed) rock-solid no-limit-to-maximum-users file-server for maximum file-transfer-and-sharing-and-storage productivity (and they will USE that T: temp drive for EVERYTHING! prepare for TERRABYTES […]

i was hoping for a similar procedure for the MFC-6490CW had no luck with this: Hold down the “Menu” key. (for MFC-6890CDW it is the “Copy” key) While still holding the menu key, unplug the machine and plug it back […]

dmidecode -t 17 # dmidecode 3.0 Getting SMBIOS data from sysfs. SMBIOS 2.7 present. Handle 0x005D, DMI type 17, 34 bytes Memory Device Array Handle: 0x005E Error Information Handle: 0x0062 Total Width: 64 bits Data Width: 64 bits Size: 4096 […]

“The cost to companies from malware and “malicious insider”-related cyberattacks jumped +12 percent in 2018 and accounted for one-third of all cyberattack costs, according to new research published today by Accenture and the Ponemon Institute.” src: helpnetsecurity.com logical consequence: stop […]

… this is why no usb stick and no cable can be trusted… Thunderbolt / PCI-Express is having similar issues “Abstract—Direct Memory Access (DMA) attacks have beenknown for many years: DMA-enabled I/O peripherals have com-plete access to the state of […]

When your CPU is 32Bit and you try to boot a 64Bit OS / load a 64Bit program, it will crash/panic/segfault, it won’t boot beyond the grub boot selection screen. “Ben Hutchings (blog) a Debian developer and Linux kernel maintainer, has […]

Update: USB 3.0 can interfere with WiFi “USB 3.0 has a 5Gbps signaling rate. The USB 3.0 specification requires USB 3.0 data to be scrambled and it requires spread-spectrum. The noise from USB 3.0 data spectrum can be high (in […]

long story short: “The Year 2038 problem is where the Unix time can no longer be stored in a signed 32-bit integer and thus after 19 January 2038 will begin wrapping around as a negative number for representing the number […]

is when one’s life depends on (especially when closed) source code that one has not written oneself.

https://youtu.be/70Blz9hyAz8 https://devtube.dev-wiki.de/videos/watch/f979469f-5fd1-4c40-a8c4-706c20c001f7 While “backdoors” in hardware sound like a good idea… you don’t know how hackers are using it to sabotage infrastructure or extort bitcoins of another country’s companies… see “backdoor in cisco router“. IT IS F**** DANGEROUS! ESPECIALLY if […]

update: 2024-04: having problem connecting to camera with vlc? (rstp not well documented or not working at all? try this: easy camera stream identification with ONVIF: it is a DAMN hussle, because EVERY camera vendor does it’s own rstp://user:password:ip.ad.dr.ess:/some/url/stream and […]

checkout the space weather today 🙂 “Schwabe cycle, is a nearly periodic 11-year change in the Sun’s activity” (src) but the sun’s particles ALSO shield from even more outer space radiation BUT the sun is ALSO protecting Earth & Mars […]

Der Tariff-Jungle der DHL ist NICHT MEHR ÜBERSCHAUBAR. Ich war heute mit 4x Paketen in der Filiale, zwei davon seien FALSCH frankiert gewesen, ich musste bei einem Paket 2€ nachzahlen, d.h. 7€ für ein Paket mit Sendungsverfolgung. Das andere sei […]

We all want RELIABLE technology to serve mankind – not pollute the planet and the oceans. For this to play out right – it is important to ONLY buy HIQH QUALITY products – that are hopefully manufacturerd IN YOUR COUNTRY […]

aim: the harddisk of a macbook has grown too small (256GB), so all data shall be transferred to a new bigger harddisk (512GB SSD) hardware: you will need an external harddisk and switch in your new bigger harddisk. usb to […]

https://youtu.be/1LMIfdIDh7I Macs used to be overpriced high quality hardware: this iMac model A1418 with Retina Display costs 1500€ and it does not even come with an SSD! DESPITE i5 QUADCORE CPU AND 8GB OF RAM – IT IS HORRIBLY SLOW! […]

Update: 2024 unfortunately also some ARM CPUs are affected by Spectre v1 and v2. Update: 2020.03 “The newly developed Rowhammer- attack TRRespass can crack the RAM-a security mechanism by many DDR4-DRAM-modules as well as LPDDR4 Chips. Until now, these were […]

monitor (andoird) devices with bpf: https://www.socallinuxexpo.org/sites/default/files/presentations/bcc-scale.pdf so guess “monitoring” is about two things: availability and performance: detect performance bottlenecks get informed if parts (harddisks) / servers have failed / are about to fail security: detect, report and (if possible) automatically […]

Update: 2018.04 the cameras could not see the lane’s properly because the lane paint has worn off… what algorithm is going to fix this? believe me or not – doing self driving car’s is almost as complex and difficult to […]

Update: 2018.12: ForeShadow – guest reading Level1 Cache of host ForeShadow (known as L1 Terminal Fault (L1TF) by Intel)[1][2] is a vulnerability that affects modern microprocessors that was first discovered by two independent teams of researchers in January 2018, but […]

to protect users’s privacy: NEVER GIVE IT YOUR WIFI PASSWORD! pros: integrates well with linux (plug into usb behaves like flashdrive) very power efficient reader cons: like Alexa, it’s a spying machine The kindle’s battery lasts very long up to […]

LibreSignal is like Signal – the private WhatsApp and SMS service – but without using requirement for GooglePlay. So people with alterntive firmwares on their phones (CyanogenMod) can use it as well. Is it a fake alternative that started off […]