roll-your-own - Jacob Salmela

roll-your-own

A collection of 16 posts

Roll-your-own Anonymizing Email Server

Roll-your-own Anonymizing Email Server

> This post isn’t about a specific security breach, but rather a post to educate you on how to better protect your online identity. The term “anonymize” is used loosely for lack of a better word. TL;DR * Create a unique email address that forwards to your real email for

Automatically Change .om to .com To Prevent Malware

Automatically Change .om to .com To Prevent Malware

Malcontents are sneaky. In their latest ploy, they are counting on you misspelling “.com” [https://www.intego.com/mac-security-blog/type-a-url-wrong-and-you-might-end-up-with-malware-on-your-mac/] so they can send you to one of their fake domains. So instead of going to netflix.com, you end up at netflix.om–a phony site determined to infect

Prevent Ransomware By Automatically Finding The Checksum Of Downloaded Files

Prevent Ransomware By Automatically Finding The Checksum Of Downloaded Files

Apple has already shut down the ransomware [http://techcrunch.com/2016/03/07/apple-has-shut-down-the-first-fully-functional-mac-os-x-ransomware/?ncid=rss] found in the Transmission torrent client. You can easily prevent this from happening to you in the future by adding a Hazel rule to your downloads folder, which will automatically determine the checksum, so

If You Like The Pi-hole, You Will Like Rolling-your-own DNSthingy (Netbender)

Yes, a DNSthingy [http://www.dnsthingy.com/r/37870001] (the consumer-facing name is Netbender). It’s an (ASUS) router running some custom firmware (based on asuswrt-merlin [https://github.com/RMerl/asuswrt-merlin/]) that does cool stuff using DNS, such as: * blocking ads * blocking malware, phishing, and tracking * virtual relocation for viewing

Detecting Wirelurker Malware

Detecting Wirelurker Malware

[UPDATE] It appears the command and control infrastructure has been neutralized [http://threatpost.com/wirelurker-mac-os-x-malware-shut-down/109204]. Palo Alto has already written a script that will detect [https://github.com/PaloAltoNetworks-BD/WireLurkerDetector/blob/master/WireLurkerDetectorOSX.py] the Wirelurker malware. [http://researchcenter.paloaltonetworks.com/2014/11/wirelurker-new-era-os-x-ios-malware/] It basically scans for the

Roll-you-own Ventir Trojan Detector for OS X

Roll-you-own Ventir Trojan Detector for OS X

Get Alerted If Your Computer Gets Infected With The Ventir Trojan With this trick, you can get alerted if your system gets infected and then take steps to manually neutralize it. The Ventir Trojan [http://www.intego.com/mac-security-blog/ventir-trojan-intercepts-keystrokes-from-mac-os-x-computers/] is a keylogger, which means all of your keystrokes are

Folder Actions On Yosemite Broken? Use launchd Instead

My roll-your-own malware detection [https://jacobsalmela.com/roll-your-own-malware-detection/] has been having troubles in OS X Yosemite [http://www.reddit.com/r/applehelp/comments/2jlbik/yosemite_high_cpu_usage_by_folder_actions/] . It appears that it increases CPU usage to abnormal amounts. I have come up with two alternative solutions that

Roll-your-own LastPass Premium

Roll-your-own LastPass Premium

Use your LastPass usernames and passwords in Safari on your iOS device without paying for a LastPass Premium subscription. Using a bit of scripting, you can roll-your-own [https://jacobsalmela.com/tag/roll-your-own/] Last Pass freemium without paying a dime! That said, it is far from perfect (see caveats below), but

Roll-your-own Defense Against Mac.BackDoor.iWorm

Roll-your-own Defense Against Mac.BackDoor.iWorm

[UPDATE]: Advanced settings added below Get Alerted If Your Computer Gets Infected When the Mac.BackDoor.iWorm [http://news.drweb.com/show/?i=5977&c=5&lng=en&p=0] malware gets installed via pirated software, your computer and becomes part of a botnet. While you may not be able

Pi-hole: Raspberry Pi Ad-Blocker [Advanced Setup]

Automated Install Run this command only on a clean install of the Raspberry Pi running Raspbian. curl -s "https://raw.githubusercontent.com/jacobsalmela/pi-hole/master/automated%20install/basic-install.sh" | bash Point your devices to use the Raspberry Pi as their DNS server and you are all set! Advanced Setup This

Roll-your-own Protection From A New Malware Called XSLCmd

Roll-your-own Protection From A New Malware Called XSLCmd

A nasty piece of malware [http://www.fireeye.com/blog/technical/malware-research/2014/09/forced-to-adapt-xslcmd-backdoor-now-on-os-x.html] on OS X is XSLCmd [http://www.macworld.com/article/2603440/cyberespionage-group-starts-using-new-mac-os-x-backdoor-program.html#tk.rss_all] . Using a neat trick [https://jacobsalmela.com/roll-your-own-malware-detection/], you can get alerted if your computer gets infected. This

How To Tell If Someone Is Spying On Your Computer Using GeekTool

[UPDATE]: An even better solution is the ScreenSharingMonitor [https://github.com/mm2270/ScreenSharingMonitor/releases], which provides a “native” feel thanks to the Notification Center messages. Ever wonder if your employer is watching your computer or connected to it remotely? The method below isn’t foolproof, but you can get an

Pi-hole: A Raspberry Pi Ad-Blocker with DNS Caching (Ultra-fast)

Pi-hole: A Raspberry Pi Ad-Blocker with DNS Caching (Ultra-fast)

This version of the Pi-hole is outdated Click the image below to read about the new version [https://jacobsalmela.com/block-millions-ads-network-wide-with-a-raspberry-pi-hole-2-0/]. [https://jacobsalmela.com/block-millions-ads-network-wide-with-a-raspberry-pi-hole-2-0/] Inspired by the AdTrap [http://www.amazon.com/gp/product/B00GOH06IE/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&

Raspberry Pi and Routing: Turning a Pi into A Router

Raspberry Pi and Routing: Turning a Pi into A Router

The Raspberry Pi can be used as a router–great if you need a pocket-sized device to share an Internet connection. It can also be used in conjunction with a cantenna [http://www.jacobsalmela.com/raspberry-pi-cantenna-ultimate-2-4ghz-wardriving-and-long-range-wifi-access/] . Requirements For This Walkthrough Materials 1. Local network 2. Mac or PC 3. Raspberry

OS X: Roll-your-own Malware Detection

OS X: Roll-your-own Malware Detection

[UPDATE 2014-10-20]: This tricks seems to cause high CPU usage in Yosemite, try using launchd instead [https://jacobsalmela.com/folder-actions-yosemite-broken-use-launchd-instead/]. [UPDATE 2014-10-02]: defend yourself from becoming a zombie [https://jacobsalmela.com/roll-defense-mac-backdoor-iworm/] courtesy of Mac.BackDoor.iWorm [UPDATE]: Use this trick to fend off the new malware XLSCmd [https://jacobsalmela.

Wi-Fi Cantenna (2.4GHz): How-to Make a Long-range Wi-Fi Antenna

cantenna Featured

Wi-Fi Cantenna (2.4GHz): How-to Make a Long-range Wi-Fi Antenna

Create a cantenna to drastically extend your Wi-Fi signal! Works great with a router that has external antennas, like the old-school classic WRT54G. Requirements For This Walkthrough Materials 1. A wireless router [http://www.amazon.com/gp/product/B00LV89BEG/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=