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Image Credit: Pixelbay Blockchain startups are cropping up left and right aiming to disrupt existing services and business models. These range from the trivial to potentially game-changing solutions that can revolutionize the internet as we know it. Among those that promise to change the world, most are attempting to reconstruct the entire internet infrastructure into something that is decentralized, secure, scalable, and tokenized. There are also those that aim to solve the most significant problems plaguing the digital world, particularly potentially costly and tedious security issues. We do not lack for dangers, ranging from data breaches to denial-of-service attacks, and other hacks. For the most part, there are capable SaaS and software-defined services that are capable enough in addressing the threats that involve malware and DDoS. However, blockchains offer much much more. The plague of DDoS Distributed denial-of-service or DDoS attacks involve a malicious hacke...

If you think a website whose value is more than $500 billion does not have any vulnerability in it, then you are wrong. Pouya Darabi, an Iranian web developer, discovered and reported a critical yet straightforward vulnerability in Facebook earlier this month that could have allowed anyone to delete any photo from the social media platform. The vulnerability resides in Facebook's new Poll feature, launched by the social media giant earlier this month, for posting polls that include images and GIF animations. Darabi analyzed the feature and found that when creating a new poll, anyone can easily replace the image ID (or gif URL) in the request sent to the Facebook server with the image ID of any photo on the social media network. Now, after sending the request with another user image ID (uploaded by someone else), that photo would appear in the poll. "Whenever a user tries to create a poll, a request containing gif URL or image id will be sent, poll_question_data[...

A massive malicious email campaign that stems from the world's largest spam botnet Necurs is spreading a new strain of ransomware at the rate of over 2 million emails per hour and hitting computers across the globe. The popular malspam botnet Necrus which has previously found distributing Dridex banking trojan , Trickbot banking trojan , Locky ransomwar e, and Jaff ransomware , has now started spreading a new version of Scarab ransomware. According to F-Secure , Necurs botnet is the most prominent deliverer of spam emails with five to six million infected hosts online monthly and is responsible for the biggest single malware spam campaigns. Scarab ransomware is a relatively new ransomware family that was initially spotted by ID Ransomware creator Michael Gillespie in June this year. Massive Email Campaign Spreads Scarab Ransomware According to a blog post published by security firm Forcepoint, the massive email campaign spreading Scarab ransomware virus started at ...

A security researcher has discovered and publicly disclosed two critical vulnerabilities in the popular Internet mail message transfer agent Exim , one of which could allow a remote attacker to execute malicious code on the targeted server. Exim is an open source mail transfer agent (MTA) developed for Unix-like operating systems such as Linux, Mac OSX or Solaris, which is responsible for routing, delivering and receiving email messages. The first vulnerability, identified as CVE-2017-16943 , is a use-after-free bug which could be exploited to remotely execute arbitrary code in the SMTP server by crafting a sequence of BDAT commands. "To trigger this bug, BDAT command is necessary to perform an allocation by raising an error," the researcher said. "Through our research, we confirm that this vulnerability can be exploited to remote code execution if the binary is not compiled with PIE." The researcher ( mehqq_ ) has also published a Proof-of-Concept (PoC) ...

Only after a few days of Uber admitting last year's data breach of 57 million customers , the popular image sharing site disclosed that it had suffered a major data breach in 2014 that compromised email addresses and passwords of 1.7 million user accounts. In a blog post published on Friday, Imgur claimed that the company had been notified of a three-year-old data breach on November 23 when a security researcher emailed the company after being sent the stolen data. Imgur Chief Operating Officer (COO) then alerted the company's founder and the Vice President of Engineering to the issue before began working to validate that the data belonged to Imgur users. After completing the data validation, the company confirmed Friday morning that the 2014 data breach impacted approximately 1.7 million Imgur user accounts (a small fraction of its 150 million user base) and that the compromised information included only email addresses and passwords. Since Imgur has never asked fo...