password spray attack Archives

Okta Warns Customers of Credential Stuffing Attacks

Posted on April 29, 2024April 29, 2024 by Srishti Chaubey

In a recent advisory, Okta, a leading identity and access management services provider, sounded the alarm over a rise in credential stuffing attacks targeting online services. Let’s delve into the details of this warning and understand the implications.

Overview of the Threat

Okta reported a significant increase in the frequency and scale of credential stuffing attacks against online services in recent weeks. These attacks have been fuelled by the widespread availability of residential proxy services, lists of previously stolen credentials, and automation tools. The surge in attacks poses a severe threat to the security of user accounts and sensitive data.

Observations by Security Experts

Duo Security and Cisco Talos also observed large-scale brute-force attacks against various targets, including VPN services, web application authentication interfaces, and SSH services. The attacks, originating from TOR exit nodes and other anonymizing tunnels and proxies, targeted VPN appliances and routers from multiple vendors.

Modus Operandi of Credential Stuffing Attacks

Credential stuffing attacks involve the automated trial of username and password combinations obtained from previous data breaches or phishing campaigns. Threat actors exploit the reuse of login credentials across multiple accounts, attempting to gain unauthorised access to compromised accounts.

Recommendations for Organisations

Enable ThreatInsight in Log and Enforce Mode for proactive IP address blocking.
Deny access from anonymizing proxies to prevent attacks from dubious sources.
Switch to Okta Identity Engine for enhanced security features.
Utilize CAPTCHA challenges and passwordless authentication with Okta FastPass.
Implement Dynamic Zones to manage access based on geo-location and other criteria.

Okta's Warning on Credential Stuffing Attacks — **Blocking anonymized requests from Admin Console > Settings > Features**
*Okta*

Implementing these recommendations can fortify an organisation’s defence against credential stuffing attacks, ensuring a safer online environment for users and stakeholders.

Conclusion

Credential stuffing attacks pose a significant threat to the security of online services and user accounts. By heeding Okta’s warning and implementing robust security measures, Okta customers can better protect themselves against these malicious activities and safeguard their sensitive data.

Another approach to create a safer cyber world is to not use the typical password based authentication. By eliminating passwords, organizations can improve their defences, increase security and reduce the risk of future incidents. Typical cyber attacks such as Credential Stuffing are not applicable to Passwordless authentication, so the best way to move forward is to #gopasswordless

Read Also

Unpacking Okta’s Recent Security Breach

Okta Breach Part 2: Unveiling the Full Scope and Impact

Cisco VPNs Suffer Brute Force Attacks : Here’s Your Shield!

Posted on April 18, 2024April 19, 2024 by Srishti Chaubey

Cisco recently issued a warning about large-scale brute-force attacks targeting VPN and SSH services on Cisco and other devices worldwide. These attacks pose significant risks to enterprise security, necessitating immediate action.

Hacker can login to VPN with stolen credentials

Cisco Warning and Compromised Services

Cisco Talos reports a surge in brute force attacks since March 18, 2024, targeting VPN services. These assaults exploit vulnerabilities in traditional password-based authentication, compromising network integrity. The known affected services are following:

Cisco Secure Firewall VPN
Checkpoint VPN
Fortinet VPN
SonicWall VPN
RD Web Services
Miktrotik
Draytek
Ubiquiti

History: Not so Private Virtual Private Networks

If you are here reading this blog, you know the drill. Maybe a password is slipped in code, spoofed, phished, whaled, 2FA or MFA is breached, or even a vendor is breached, and your organization and user information lies in the hands of a threat actor. According to an HBR Report “The FBI regards a cybersecurity breach at every organization—including yours—as a matter not of ‘if,’ or even ‘when,’ but ‘how often.'”

Most often then not, these threat actors will siege your assets, ask for ransom and cause a lot of trouble. Two out of Three organizations, without a regard of size, have faced ransomware in 2023. Beyond the cost of expenses, including, potentially, the ransom itself, downtime averages $365,000 an hour in revenue loss. When you consider that the average recovery time is three weeks, it becomes clear how devastating these attacks can be.

In our previous blog we have discussed VPN breaches in detail. Anyhow, here’s some compact data for you.

Affected Entity	Root Cause	Impact
Avast Antivirus	Stolen credentials	Adversaries modified the CCleaner distributed by Avast .
Lockheed Martin	CVE-2011-0609	Critical data related to the defence contracts leaked.
Pulse Secure	CVE-2019-11510	1000 enterprises are at risk of ransomware attacks.
Ukraine Power grid	Malware	Power grid taken offline leading to no electricity for thousands.

List of the most serious VPN attacks due to stolen credentials

Brute Force Attacks

Brute force attacks involve systematically trying multiple username-password combinations until the correct one is found. Attackers leverage proxies like TOR, VPN Gate, IPIDEA Proxy etc to conceal their origins, intensifying the challenge of detection.Password spray attacks, on the other hand, target numerous accounts with commonly used passwords, increasing the likelihood of success.

Your Knight in Passwordless Armour – PureAuth

In light of escalating threats, enterprises must prioritise the adoption of passwordless VPN solutions. Embracing innovative authentication mechanisms ensures a resilient defence against evolving cyber threats.

Passwordless Authentication in popular VPN by PureAuth — VPNs you can make Passwordless

Transitioning to passwordless VPN systems offers a robust defence against brute force attacks. By eliminating passwords, these systems thwart credential stuffing attempts, enhancing overall security.

Conclusion

In the face of mounting VPN vulnerabilities, the imperative to transition to passwordless systems cannot be overstated. By embracing advanced authentication methods, organisations can fortify their defences against brute force attacks, safeguarding critical assets and data.

Read Also

Your 1st Step to #GoPasswordless

Credential stuffing Attacks on VPN: Serious Risk for Enterprise

Microsoft Reveals Russian Hack: Executives’ Emails Compromised

Posted on January 23, 2024January 29, 2024 by Srishti Chaubey

Introduction

In a recent disclosure, Microsoft unveils the details of a sophisticated cyber breach by Russian state-sponsored hackers. The breach, detected on January 12, sheds light on the tactics of the notorious hacking group, Midnight Blizzard, also known as APT29 or Cozy Bear.

Breach Overview: Understanding the Intrusion

In November 2023, Midnight Blizzard initiated a password spray attack. They compromised a legacy non-production test tenant account, gaining access to limited Microsoft email accounts.

Compromised Accounts: Impact on Corporate Email Security

The aftermath reveals that a select group fell victim, including members of Microsoft’s senior leadership team and employees in crucial functions such as cybersecurity and legal. The attackers exfiltrated emails and attached documents, putting sensitive information at risk.

Attribution and Interest: Identifying the Culprits

Microsoft’s threat research team attributed the breach to APT29, emphasising the group’s specific interest in Microsoft’s knowledge of their operations. This marks Midnight Blizzard’s return after their infamous 2020 cyberattack on SolarWinds.

Highlighting the Key Issue: Addressing Problems with Passwords

The breach underscores the vulnerability posed by traditional password systems. The password spray attack exploited weak passwords, showcasing the critical need for organizations to evolve towards passwordless solutions to enforce security.

Risk Mitigation: Addressing Future Threats

Microsoft, quick to respond, is now advocating for the adoption of passwordless solutions as a preventive measure against such breaches. The urgency to reassess and enhance cybersecurity measures has never been more evident.

Immediate Response: Microsoft’s Swift Action

In response to the breach, Microsoft has promptly applied enhanced security standards to its legacy systems and internal business processes. This immediate action aims to sabotage potential follow-up attacks and protect against further unauthorised access.

Ongoing Investigation: Collaborating with Authorities

The investigation is ongoing, with Microsoft actively collaborating with law enforcement and regulators to comprehensively assess the full impact of the breach. This collaboration is crucial for determining additional preventive measures and addressing the evolving landscape of cyber threats.

Conclusion: Looking Ahead

As companies face ever-changing online risks, the Microsoft hack is a clear signal that using weak passwords can be a big problem. Implementing passwordless solutions stands out as a critical step towards a more secure digital future.