Slashdot Mirror

An anonymous reader quotes Ars Technica: Criminals infected more than 100,000 computers with browser extensions that stole login credentials, surreptitiously mined cryptocurrencies, and engaged in click fraud. The malicious extensions were hosted in Google's official Chrome Web Store. The scam was active since at least March with seven malicious extensions known so far, researchers with security firm Radware reported Thursday. Google's security team removed five of the extensions on its own and removed two more after Radware reported them. In all, the malicious add-ons infected more than 100,000 users, at least one inside a "well-protected network" of an unnamed global manufacturing firm, Radware said...

The extensions were being pushed in links sent over Facebook that led people to a fake YouTube page that asked for an extension to be installed. Once installed, the extensions executed JavaScript that made the computers part of a botnet. The botnet stole Facebook and Instagram credentials and collected details from a victim's Facebook account. The botnet then used that pilfered information to send links to friends of the infected person. Those links pushed the same malicious extensions. If any of those friends followed the link, the whole infection process started all over again. The botnet also installed cryptocurrency miners that mined the monero, bytecoin, and electroneum digital coins.

Ars Technica reports on Hajime, a sophisticated "vigilante botnet that infects IoT devices before blackhats can hijack them." Once Hajime infects an Internet-connected camera, DVR, and other Internet-of-things device, the malware blocks access to four ports known to be the most widely used vectors for infecting IoT devices. It also displays a cryptographically signed message on infected device terminals that describes its creator as "just a white hat, securing some systems." But unlike the bare-bones functionality found in Mirai, Hajime is a full-featured package that gives the botnet reliability, stealth, and reliance that's largely unparalleled in the IoT landscape...

Hajime doesn't rashly cycle through a preset list of the most commonly used user name-password combinations when trying to hijack a vulnerable device. Instead, it parses information displayed on the login screen to identify the device manufacturer and then tries combinations the manufacturer uses by default... Also, in stark contrast to Mirai and its blackhat botnet competitors, Hajime goes to great lengths to maintain resiliency. It uses a BitTorrent-based peer-to-peer network to issue commands and updates. It also encrypts node-to-node communications. The encryption and decentralized design make Hajime more resistant to takedowns by ISPs and Internet backbone providers.
Pascal Geenens, a researcher at security firm Radware, watched the botnet attempt 14,348 hijacks from 12,000 unique IP addresses around the world, and says "If Hajime is a glimpse into what the future of IoT botnets looks like, I certainly hope the IoT industry gets its act together and starts seriously considering securing existing and new products. If not, our connected hopes and futures might depend on...grey hat vigilantes to purge the threat the hard way."

And long-time Slashdot reader The_Other_Kelly asks a good question. "While those with the ability and time can roll their own solutions, what off-the-shelf home security products are there, for non-technical people to use to protect their home/IoT networks?"

Ars Technica reports on Hajime, a sophisticated "vigilante botnet that infects IoT devices before blackhats can hijack them." Once Hajime infects an Internet-connected camera, DVR, and other Internet-of-things device, the malware blocks access to four ports known to be the most widely used vectors for infecting IoT devices. It also displays a cryptographically signed message on infected device terminals that describes its creator as "just a white hat, securing some systems." But unlike the bare-bones functionality found in Mirai, Hajime is a full-featured package that gives the botnet reliability, stealth, and reliance that's largely unparalleled in the IoT landscape...

Hajime doesn't rashly cycle through a preset list of the most commonly used user name-password combinations when trying to hijack a vulnerable device. Instead, it parses information displayed on the login screen to identify the device manufacturer and then tries combinations the manufacturer uses by default... Also, in stark contrast to Mirai and its blackhat botnet competitors, Hajime goes to great lengths to maintain resiliency. It uses a BitTorrent-based peer-to-peer network to issue commands and updates. It also encrypts node-to-node communications. The encryption and decentralized design make Hajime more resistant to takedowns by ISPs and Internet backbone providers.
Pascal Geenens, a researcher at security firm Radware, watched the botnet attempt 14,348 hijacks from 12,000 unique IP addresses around the world, and says "If Hajime is a glimpse into what the future of IoT botnets looks like, I certainly hope the IoT industry gets its act together and starts seriously considering securing existing and new products. If not, our connected hopes and futures might depend on...grey hat vigilantes to purge the threat the hard way."

And long-time Slashdot reader The_Other_Kelly asks a good question. "While those with the ability and time can roll their own solutions, what off-the-shelf home security products are there, for non-technical people to use to protect their home/IoT networks?"

An anonymous reader quotes a report from Ars Technica: BrickerBot, the botnet that permanently incapacitates poorly secured Internet of Things devices before they can be conscripted into Internet-crippling denial-of-service armies, is back with a new squadron of foot soldiers armed with a meaner arsenal of weapons. Pascal Geenens, the researcher who first documented what he calls the permanent denial-of-service botnet, has dubbed the fiercest new instance BrickerBot.3. It appeared out of nowhere on April 20, exactly one month after BrickerBot.1 first surfaced. Not only did BrickerBot.3 mount a much quicker number of attacks -- with 1,295 attacks coming in just 15 hours -- it used a modified attack script that added several commands designed to more completely shock and awe its targets. BrickerBot.1, by comparison, fired 1,895 volleys during the four days it was active, and the still-active BrickerBot.2 has spit out close to 12 attacks per day. Shortly after BrickerBot.3 began attacking, Geenens discovered BrickerBot.4. Together, the two newly discovered instances have attempted to attack devices in the research honeypot close to 1,400 times in less than 24 hours. Like BrickerBot.1, the newcomer botnets are made up of IoT devices running an outdated version of the Dropbear SSH server with public, geographically dispersed IP addresses. Those two characteristics lead Geenens to suspect the attacking devices are poorly secured IoT devices themselves that someone has compromised and used to permanently take out similarly unsecured devices. Geenens, of security firm Radware, has more details here.

An anonymous reader writes: "A new malware strain called BrickerBot is intentionally bricking Internet of Things (IoT) devices around the world by corrupting their flash storage capability and reconfiguring kernel parameters. The malware spreads by launching brute-force attacks on IoT (BusyBox-based) devices with open Telnet ports. After BrickerBot attacks, device owners often have to reinstall the device's firmware, or in some cases, replace the device entirely. Attacks started on March 20, and two versions have been seen. One malware strain launches attacks from hijacked Ubiquiti devices, while the second, more advanced, is hidden behind Tor exit nodes. Several security researchers believe this is the work of an internet vigilante fed up with the amount of insecure IoT devices connected to the internet and used for DDoS attacks. "Wow. That's pretty nasty," said Cybereason security researcher Amit Serper after Bleeping Computer showed him Radware's security alert. "They're just bricking it for the sake of bricking it. [They're] deliberately destroying the device."

An anonymous reader writes Since the three day terror attack that started in France on January 7 with the attack on satirical newspaper Charlie Hebdo, 19,000 websites of French-based companies have been targeted by cyber attackers. This unprecedented avalanche of cyber attacks targeted both government sites and that of big and small businesses. Most were low-level DDoS attacks, and some were web defacements. Several websites in a number of towns in the outskirts of Paris have been hacked and covered with an image of an ISIS flag. The front pages of the official municipality websites have been covered with the Jihadist militant group's black flag. In a report, Radware researchers noted that Islamic hacker group AnonGhost has also launched a "digital jihad" against France.