The Bitcoin Core developers recently fixed Vulnerability-related.PatchVulnerability a major vulnerability in the Bitcoin ( BTC ) network ’ s ( client ) codebase . Explaining the potentially serious nature of the software bug , which is tracked as Vulnerability-related.DiscoverVulnerability CVE-2018-17144 and classified as a denial-of-service ( DoS ) attack , Casaba Security co-founder Jason Glassberg said Vulnerability-related.DiscoverVulnerability : “ [ It ] can take down the network. ” Glassberg also told Vulnerability-related.DiscoverVulnerability ZDNet the vulnerability in the Bitcoin Core codebase “ would [ have ] affected transactions in the sense that they can not be completed , but does not appear to open up a way to steal or manipulate wallets. ” Denial-of-Service ( DoS ) , 51 % Attacks The Bitcoin Core client software is used by BTC miners to validate transactions on the cryptocurrency ’ s blockchain and the recent vulnerability found Vulnerability-related.DiscoverVulnerability in its source code could have been used to intentionally crash bitcoin ’ s full-node operators . Although not logistically feasible , this particular software bug could have been remotely exploited Vulnerability-related.DiscoverVulnerability by an attacker to launch a 51 % attack in which one entity controls the majority of the hashing ( or computing ) power of a cryptocurrency network . Advisory Notice , Critical Patch Released Vulnerability-related.PatchVulnerability In most cases , a bad actor has orchestrated a 51 % attack in order to manipulate transactions on a cryptocurrency ’ s blockchain for financial gains . At present , it would cost approximately $ 490,000 to launch such an attack ( for 1 hour ) on the Bitcoin network , according to Crypto51 . However , if the recent Bitcoin Core software bug had not been patched Vulnerability-related.PatchVulnerability , a bad actor could have initiated a 51 % attack on the cryptocurrency ’ s network at a considerably lower cost . The Bitcoin Core developers posted Vulnerability-related.DiscoverVulnerability an advisory notice ( on September 19th ) regarding this DoS vulnerability . Users of Bitcoin Core have been instructed to upgrade Vulnerability-related.PatchVulnerability to version 0.16.3 of the software . Previous versions ( 0.14.0 to 0.16.3 ) of the client contain the DoS vulnerability . Bitcoin Knots , one of at least 96 bitcoin forks to date , was considered vulnerable Vulnerability-related.DiscoverVulnerability as well and its client software was patched Vulnerability-related.PatchVulnerability . `` Copycat '' Cryptos Are At Risk Notably , the CVE-2018-17144 vulnerability could have also affected Vulnerability-related.DiscoverVulnerability the litecoin ( LTC ) network but its client has received Vulnerability-related.PatchVulnerability a patch . Commenting on the serious nature of these software bugs , Cornell computer science professor Emin Gün Sirer said Vulnerability-related.DiscoverVulnerability : “ Copycat currencies are at risk ” - meaning that all bitcoin forks are vulnerable Vulnerability-related.DiscoverVulnerability to the attack . The Turkish-American cryptographer , who identified Vulnerability-related.DiscoverVulnerability critical vulnerabilities in Ethereum ’ s codebase before its network was hit with the DAO attack , was referring to all the currently 69 active bitcoin forks that could still be exploited Vulnerability-related.DiscoverVulnerability with a 51 % attack as their clients might still not have received Vulnerability-related.PatchVulnerability a patch and are not as secure as bitcoin network due to their smaller size . In fact , Crypto51 has estimated it would only cost $ 122 to launch a 51 % attack on the Bitcoin Private ( BTCP ) network . However , this estimate has not been confirmed by another source .

This week , Adobe released Vulnerability-related.PatchVulnerability its monthly scheduled update bundle addressing Vulnerability-related.PatchVulnerability vulnerabilities within its different products . The Adobe patch Tuesday November updates allegedly fixed Vulnerability-related.PatchVulnerability numerous vulnerabilities leading to information disclosure . These vulnerabilities existed in Vulnerability-related.DiscoverVulnerability Adobe Acrobat/Reader , Flash Player , and Photoshop CC . The recently released Adobe Patch Tuesday November updates addressed Vulnerability-related.PatchVulnerability three different vulnerabilities – all resulting in information disclosure . The first one existed in Vulnerability-related.DiscoverVulnerability the Adobe Photoshop CC affecting Vulnerability-related.DiscoverVulnerability versions 19.1.6 and prior for both Windows and MacOS . As described in the security advisory , Adobe has fixed Vulnerability-related.PatchVulnerability this important Out-of-bounds read vulnerability ( CVE-2018-15980 ) in the Photoshop CC versions 19.1.7 and 20.0 . The second information disclosure flaw affected Vulnerability-related.DiscoverVulnerability Adobe Reader and Acrobat for Windows . Explaining about the flaw in their advisory , Adobe stated , “ Successful exploitation could lead to an inadvertent leak of the user ’ s hashed NTLM password. ” The vulnerability initially received the CVE Vulnerability-related.DiscoverVulnerability number CVE-2018-4993 , when Check Point Research first reported Vulnerability-related.DiscoverVulnerability the bug . However , as recently disclosed Vulnerability-related.DiscoverVulnerability by the EdgeSpot , Adobe only patched Vulnerability-related.PatchVulnerability a single variant of this bug . Whereas , the EdgeSpot team discovered Vulnerability-related.DiscoverVulnerability other variants that hinted towards a failed patching Vulnerability-related.PatchVulnerability of the bug instead of a new vulnerability . The patched vulnerability has now received CVE Vulnerability-related.DiscoverVulnerability number CVE-2018-15979 “ to reflect that the patch is available Vulnerability-related.PatchVulnerability ” . The third vulnerability addressed Vulnerability-related.PatchVulnerability this month is an out-of-bounds Read vulnerability ( CVE-2018-15978 ) in the Adobe Flash Player . The affected versions include 31.0.0.122 and earlier for Windows , Linux , and MacOS . Unlike previous months , the Adobe Patch Tuesday November update bundle addressed Vulnerability-related.PatchVulnerability fewer bugs . Moreover , none of the patched vulnerabilities had a critical severity impact . In October , Adobe patched Vulnerability-related.PatchVulnerability 86 different vulnerabilities including 47 critical ones . Whereas , in September , they addressed Vulnerability-related.PatchVulnerability 6 critical flaws . Adobe has fixed Vulnerability-related.PatchVulnerability the bugs CVE-2018-15980 and CVE-2018-15978 in Adobe Photoshop CC versions 19.1.7 and 20.0 and Adobe Flash Player version 31.0.0.148 , respectively . Whereas , CVE-2018-15979 has received Vulnerability-related.PatchVulnerability a patch in Adobe Acrobat DC and Reader DC version 2019.008.20081 , Acrobat 2017 and Acrobat Reader DC 2017 version 2017.011.30106 , and Acrobat DC and Acrobat Reader DC ( Classic 2015 ) version 2015.006.30457 . For protection against the three important vulnerabilities addressed Vulnerability-related.PatchVulnerability in November updates , users should make sure to upgrade Vulnerability-related.PatchVulnerability their software to the patched versions at the earliest convenience .

Criminals are attempting to trick Attack.Phishing consumers into handing over passwords and credit card details by taking advantage of the flood of emails being sent out Attack.Phishing ahead of new European privacy legislation . The European Union 's new General Data Protection Regulation ( GDPR ) come into force on 25 May and the policy is designed to give consumers more control over their online data . As a result , in the run-up to it , organisations are sending out Attack.Phishing messages to customers to gain their consent for remaining on their mailing lists . With so many of these messages being sent out Attack.Phishing , it was perhaps only a matter of time before opportunistic cybercriminals looked to take advantage of the deluge of messages about GDPR and privacy policies arriving in people 's inboxes . A GDPR-related phishing scam Attack.Phishing uncovered by researchers at cyber security firm Redscan is doing just this in an effort to steal data with emails claiming to be Attack.Phishing from Airbnb . The attackers appear to be Attack.Phishing targeting business email addresses , which suggests the messages are sent Attack.Phishing to emails scraped from the web . The phishing message addresses the user as an Airbnb host and claims Attack.Phishing they 're not able to accept new bookings or send Attack.Phishing messages to prospective guests until a new privacy policy is accepted . `` This update is mandatory because of the new changes in the EU Digital privacy legislation that acts upon United States based companies , like Airbnb in order to protect European citizens and companies , '' the message says , and the recipient is urged Attack.Phishing to click a link to accept the new privacy policy . Those who click the link are asked to enter their personal information , including account credentials and payment card information . If the user enters these , they 're handing the data straight into the hands of criminals who can use it for theft , identity fraud , selling on the dark web and more . `` The irony wo n't be lost on anyone that cybercriminals are exploiting the arrival of new data protection regulations to steal Attack.Databreach people 's data , '' said Mark Nicholls , Director of Cyber Security at Redscan . `` Scammers know that people are expecting exactly these kinds of emails this month and that they are required to take action , whether that 's clicking a link or divulging personal data . It 's a textbook phishing campaign Attack.Phishing in terms of opportunistic timing and having a believable call to action '' . Airbnb is sending messages to users about GDPR , but the messages contain far more detail and do n't ask the users to enter any credentials , merely agree to the new Terms of Service . While the phishing messages might look legitimate at first glance , it 's worth noting they do n't use the right domain - the fake messages come from Attack.Phishing ' @ mail.airbnb.work ' as opposed to ' @ airbnb.com ' . Redscan has warned that attackers are likely to use GDPR as bait Attack.Phishing for other phishing scams Attack.Phishing , with messages claiming to be Attack.Phishing from other well-known companies . `` As we get closer to the GDPR implementation deadline , I think we can expect to see a lot a lot more of these types of phishing scams Attack.Phishing over the next few weeks , that 's for sure , '' said Nicholls , who warned attackers could attempt to use the ploy to deliver malware in future . `` In the case of the Airbnb scam email , hackers were attempting to harvest Attack.Databreach credentials . Attack vectors do vary however and it 's possible that other attacks may attempt to infect hosts with keyloggers or ransomware , for example . '' he said . Airbnb said those behind the attacks have n't accessed Attack.Databreach user details in order to send Attack.Phishing emails and that users who receive Attack.Phishing a suspicious message claiming to be Attack.Phishing from Airbnb should send it to their safety team . `` These emails are a brazen attempt at using our trusted brand to try and steal Attack.Databreach user 's details , and have nothing to do with Airbnb . We 'd encourage anyone who has received Attack.Phishing a suspicious looking email to report it to our Trust and Safety team on report.phishing @ airbnb.com , who will fully investigate , '' an Airbnb spokesperson told ZDNet . Airbnb also provided information on how to spot a fake email to help users to determine if a message is genuine or not .