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What has the Necurs botnet been up to?

The Necurs botnet has been slowly growing since late 2012 and still tops the list of largest spam botnets in the world. Since then, the botnet has occasionally stopped or temporarily minimized the sending out of spam but has returned in full force. How big is the Necurs botnet? It’s difficult to say precisely, but the latest information provided by the Cisco Talos team can give a general idea. The researchers analyzed 32 distinct spam … More ?

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What has the Necurs botnet been up to?

Satori variant hacks into mining rigs, steals ETH by replacing wallet address

Qihoo 360 Netlab researchers warn about a new variant of the Satori malware that apparently goes after ether (ETH) mining rigs. The malware The malware, dubbed Satori.Coin.Robber, started to reestablish the Satori botnet sinkholed last December, but also hacks into Windows-based mining hosts running the popular Claymore Miner software. Older versions of the Claymore Miner provide a remote monitoring and management interface on port 3333, which by default allow remote reading for mining status, the … More ?

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Satori variant hacks into mining rigs, steals ETH by replacing wallet address

IoT malware targeting zero-day vulnerabilities

Once it became evident that IoT devices can be relatively easily enslaved in botnets and that even their limited power can be used for a variety of nefarious purposes, it was open season for malicious actors. First, they targeted IoT devices with default or weak passwords, and manufacturers and users began changing them. Then they used known vulnerabilities, and IoT vendor increased their efforts to push out patches. Now, some of the botmasters are making … More ?

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IoT malware targeting zero-day vulnerabilities

Q3 2017 Global DDoS Threat Landscape Report released

The newly released Q3 2017 Global DDoS Threat Landscape Report from Imperva Incapsula features insights on attacks and mitigation. These are some of the key findings: Bitcoin was one of the most targeted industries High packet rate attacks grew more common A third of network layer attacks were highly persistent Botnet activity out of India and Turkey continued to climb.

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Q3 2017 Global DDoS Threat Landscape Report released

An analysis of 120 mobile app stores uncovers plethora of malicious apps

RiskIQ analyzed 120 mobile app stores and more than 2 billion daily scanned resources. In listing and analyzing the app stores hosting the most malicious mobile apps and the most prolific developers of malicious apps, their Q3 mobile threat landscape report documents an increase in blacklisted apps over Q2, as well as the continued issues of imitation and trojan apps in official app stores and the emergence of the massive WireX mobile botnet. Total number … More ?

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An analysis of 120 mobile app stores uncovers plethora of malicious apps

Return of Necurs botnet brings new ransomware threat

The Necurs botnet has returned to the top ten most prevalent malware during November 2017, as cybercriminals used it to distribute a new form of ransomware, according to Check Point. Researchers found that hackers were using Necurs, considered to be the largest spam botnet in the world, to distribute the relatively new Scarab ransomware that was first seen in June 2017. The Necurs botnet started mass distribution of Scarab during the Thanksgiving holiday, sending over … More ?

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Return of Necurs botnet brings new ransomware threat

DDoS attackers increasingly targeting cryptocurrency exchanges

The extraordinary volatility of the price of bitcoin has spurred speculators to employ a wide variety of tricks to make it swing between extremes, so that they can take advantage of it. The unregulated nature of the cryptocurrency ecosystem makes it possible for things like statements by widely esteemed financial executives to have a sizeable impact on the currency’s price. Another way to influence the price is through DDoS attacks against bitcoin exchange sites. There’s … More ?

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DDoS attackers increasingly targeting cryptocurrency exchanges

Andromeda botnet dismantled in international cyber operation

On 29 November 2017, the Federal Bureau of Investigation (FBI), in close cooperation with the Luneburg Central Criminal Investigation Inspectorate in Germany, Europol’s European Cybercrime Centre (EC3), the Joint Cybercrime Action Task Force (J-CAT), Eurojust and private-sector partners, dismantled one of the longest running malware families in existence called Andromeda (also known as Gamarue). According to Microsoft, Andromeda’s main goal was to distribute other malware families. Andromeda was associated with 80 malware families and, in … More ?

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Andromeda botnet dismantled in international cyber operation

Criminals leverage unsecured IoT devices, DDoS attacks surge

Organizations experienced an average of 237 DDoS attack attempts per month during Q3 2017 – equivalent to 8 DDoS attack attempts every day – as hackers strive to take their organisations offline or steal sensitive data, according to Corero Network Security. The data, which is based on DDoS attack attempts against Corero customers, represents a 35% increase in monthly attack attempts compared to the previous quarter (Q2 2017), and a 91% increase in monthly attack … More ?

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Criminals leverage unsecured IoT devices, DDoS attacks surge

DDoS attacks: Brands have plenty to lose, even if attacked only once

DDoS attacks continue to be an effective means to distract and confuse security teams while inflicting serious damage on brands. Neustar discovered that brands experienced a 27 percent increase in the number of breaches per DDoS attack, despite suffering similar attack levels in the same time period last year. Attackers are getting higher yields from determined attacks Data from the report shows attackers are achieving higher levels of success against brands they only hit once: … More ?

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DDoS attacks: Brands have plenty to lose, even if attacked only once