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What is AS-REP Roasting attack, really?

What is AS-REP Roasting attack, really?

Sep 02, 2021
Microsoft's Active Directory is  said to be used by 95%  of Fortune 500. As a result, it is a prime target for attackers as they look to gain access to credentials in the organization, as compromised credentials provide one of the easiest ways for hackers to access your data. A key authentication technology that underpins Microsoft Active Directory is Kerberos. Unfortunately, hackers use many different attacks against Active Directory's implementation of the Kerberos authentication protocol. One of those is AS-REP Roasting. So what is AS-REP Roasting, and how can businesses protect themselves? What is Active Directory Kerberos? Kerberos was originally developed by the Massachusetts Institute of Technology (MIT) and centered around using tickets to establish trust. Microsoft's implementation of Kerberos found in Active Directory is based on Kerberos Network Authentication Service (V5) as defined in  RFC 4120 . However, Microsoft has added to and enhanced Kerberos with ...
New BrakTooth Flaws Leave Millions of Bluetooth-enabled Devices Vulnerable

New BrakTooth Flaws Leave Millions of Bluetooth-enabled Devices Vulnerable

Sep 02, 2021
A set of new security vulnerabilities has been disclosed in commercial Bluetooth stacks that could enable an adversary to execute arbitrary code and, worse, crash the devices via denial-of-service (DoS) attacks.  Collectively dubbed " BrakTooth " (referring to the Norwegian word "Brak" which translates to "crash"), the 16 security weaknesses span across 13 Bluetooth chipsets from 11 vendors such as Intel, Qualcomm, Zhuhai Jieli Technology, and Texas Instruments, covering an estimated 1,400 or more commercial products, including laptops, smartphones, programmable logic controllers, and IoT devices. The flaws were disclosed by researchers from the ASSET (Automated Systems SEcuriTy) Research Group at the Singapore University of Technology and Design (SUTD). "All the vulnerabilities […] can be triggered without any previous pairing or authentication," the researchers noted. "The impact of our discovered vulnerabilities is categorized into ...
WhatsApp Photo Filter Bug Could Have Exposed Your Data to Remote Attackers

WhatsApp Photo Filter Bug Could Have Exposed Your Data to Remote Attackers

Sep 02, 2021
A now-patched high-severity security vulnerability in WhatApp's image filter feature could have been abused to send a malicious image over the messaging app to read sensitive information from the app's memory. Tracked as  CVE-2020-1910  (CVSS score: 7.8), the flaw concerns an out-of-bounds read/write and stems from applying specific image filters to a rogue image and sending the altered image to an unwitting recipient, thereby enabling an attacker to access valuable data stored the app's memory. "A missing bounds check in WhatsApp for Android prior to v2.21.1.13 and WhatsApp Business for Android prior to v2.21.1.13 could have allowed out-of-bounds read and write if a user applied specific image filters to a specially-crafted image and sent the resulting image," WhatsApp  noted  in its advisory published in February 2021. Cybersecurity firm Check Point Research, which disclosed the issue to the Facebook-owned platform on November 10, 2020, said it was able to...
cyber security

New Webinar: Identity Attacks Have Changed — Have Your IR Playbooks?

websitePush SecurityThreat Detection / Identity Security
With modern identity sprawl, the blast radius of a breach is bigger than ever. Are you prepared? Sign up now.
cyber security

AI Can Personalize Everything—Except Trust. Here's How to Build It Anyway

websiteTHN WebinarIdentity Management / AI Security
We'll unpack how leading teams are using AI, privacy-first design, and seamless logins to earn user trust and stay ahead in 2025.
Is Traffic Mirroring for NDR Worth the Trouble? We Argue It Isn't

Is Traffic Mirroring for NDR Worth the Trouble? We Argue It Isn't

Sep 02, 2021
Network Detection & Response (NDR) is an emerging technology developed to close the blind security spots left by conventional security solutions, which hackers exploited to gain a foothold in target networks. Nowadays, enterprises are using a plethora of security solutions to protect their network from cyber threats. The most prominent ones are Firewalls, IPS/IDS, SIEM, EDR, and XDR (which combines the functionality of EDR and SIEM). However, all these solutions suffer from security gaps that prevent them from stopping advanced cyber-attacks efficiently.  NDR was developed based on Intrusion Detection System (IDS). An IDS solution is installed on the network perimeter and monitors the network traffic for suspicious activities. IDS systems suffer from many downsides that make them inefficient in stopping modern cyber-attacks: IDS use signature-based detection techniques to discover abnormal activities, making them unable to spot unknown attacks. In addition, IDS systems tri...
Chinese Authorities Arrest Hackers Behind Mozi IoT Botnet Attacks

Chinese Authorities Arrest Hackers Behind Mozi IoT Botnet Attacks

Sep 02, 2021
The operators of the Mozi IoT botnet have been taken into custody by Chinese law enforcement authorities, nearly two years after the malware emerged on the threat landscape in September 2019. News of the arrest, which originally  happened  in June, was  disclosed  by researchers from Netlab, the network research division of Chinese internet security company Qihoo 360, earlier this Monday, detailing its involvement in the operation. "Mozi uses a P2P [peer-to-peer] network structure, and one of the 'advantages' of a P2P network is that it is robust, so even if some of the nodes go down, the whole network will carry on, and the remaining nodes will still infect other vulnerable devices, that is why we can still see Mozi spreading," said Netlab, which spotted the botnet for the first time in late 2019. The development also comes less than two weeks after Microsoft Security Threat Intelligence Center  revealed  the botnet's new capabilities that enable it t...
FTC Bans Stalkerware App SpyFone; Orders Company to Erase Secretly Stolen Data

FTC Bans Stalkerware App SpyFone; Orders Company to Erase Secretly Stolen Data

Sep 02, 2021
The U.S. Federal Trade Commission on Wednesday banned a stalkerware app company called SpyFone from the surveillance business over concerns that it stealthily harvested and shared data on people's physical movements, phone use, and online activities that were then used by stalkers and domestic abusers to monitor potential targets. "SpyFone is a brazen brand name for a surveillance business that helped stalkers steal private information,"  said  Samuel Levine, acting director of the FTC's Bureau of Consumer Protection, in a statement. "The stalkerware was hidden from device owners, but was fully exposed to hackers who exploited the company's slipshod security. This case is an important reminder that surveillance-based businesses pose a significant threat to our safety and security." Calling out the app developers for its lack of basic security practices, the agency has also ordered SpyFone to delete the illegally harvested information and notify devic...
Cybercriminals Abusing Internet-Sharing Services to Monetize Malware Campaigns

Cybercriminals Abusing Internet-Sharing Services to Monetize Malware Campaigns

Sep 01, 2021
Threat actors are capitalizing on the growing popularity of proxyware platforms like Honeygain and Nanowire to monetize their own malware campaigns, once again illustrating how attackers are quick to  repurpose and weaponize legitimate platforms  to their advantage. "Malware is currently leveraging these platforms to monetize the internet bandwidth of victims, similar to how malicious cryptocurrency mining attempts to monetize the CPU cycles of infected systems," researchers from Cisco Talos  said  in a Tuesday analysis. "In many cases, these applications are featured in multi-stage, multi-payload malware attacks that provide adversaries with multiple monetization methods." Proxyware, also called internet-sharing applications, are legitimate services that allow users to carve out a percentage of their internet bandwidth for other devices, often for a fee, through a client application offered by the provider, enabling other customers to access the internet using ...
Linphone SIP Stack Bug Could Let Attackers Remotely Crash Client Devices

Linphone SIP Stack Bug Could Let Attackers Remotely Crash Client Devices

Sep 01, 2021
Cybersecurity researchers on Tuesday disclosed details about a zero-click security vulnerability in the Linphone Session Initiation Protocol ( SIP ) stack that could be remotely exploited without any action from a victim to crash the SIP client and cause a denial-of-service (DoS) condition. Tracked as  CVE-2021-33056  (CVSS score: 7.5), the issue concerns a NULL pointer dereference vulnerability in the " belle-sip " component, a C-language library used to implement SIP transport, transaction, and dialog layers, with all versions prior to  4.5.20  affected by the flaw. The weakness was discovered and reported by industrial cybersecurity company Claroty. Linphone is an open-source and cross-platform SIP client with support for voice and video calls, end-to-end encrypted messaging, and audio conference calls, among others. SIP, on the other hand, is a signaling protocol used for initiating, maintaining, and terminating real-time multimedia communication sessions for...
[LIVE WEBINAR] How Lean Security Teams Can Improve Their Time to Response

[LIVE WEBINAR] How Lean Security Teams Can Improve Their Time to Response

Sep 01, 2021
Cybersecurity could be described as a marathon for security teams that spend most of their time building sustained defenses that prevent threats day after day. However, they must be ready to hit a sprint whenever an attack succeeds since attack duration, and the resulting damages are directly correlated.  Reacting to a successful attack is a major challenge for lean security teams today since speed tends to be a result of size. Large teams with abundant resources can respond to incidents much faster as they can expend those resources freely. Lean security teams face the same costs and resource needs but with a much smaller pool to call from. A new live webinar by XDR provider Cynet shows why that doesn't have to be the case ( register here ).  The webinar breaks down how even large enterprises struggle with time to response. Look at any of the major breaches of the past years and you'll find large security teams that overlooked red flags or mishandled their incident respons...
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