FAQ for the End of SMS Authentication

Q: What is the end of SMS authentication?

A: SMS authentication verifies user identity by sending a one-time code via text message to a user’s mobile phone number. With the rise of potential security risks, many financial websites, applications, and phone apps are phasing out SMS-based authentication and transitioning to authenticator apps that reside on user devices and smartphones.

Q: What are some of the potential security risks associated with SMS authentication?

A: Attackers have a variety of means of intercepting SMS text messages, thus defeating this type of authentication. This increases the risk of interception and misuse of the codes in question and decreases the security of the user’s account with the financial institution.

Q: What is an authenticator app?

A: An authenticator app is an application that resides in encrypted storage on the user’s device and, when prompted, provides a one-time password (“OTP”) just like the code sent in the text message. The difference is, through a variety of cryptographic techniques, once the application is set up and the settings configured, it doesn’t need to communicate with the financial platform and thus is significantly more difficult for attackers to compromise.

Q: What are the steps for organizations to switch from SMS authentication to authenticator apps?

A: Here is a quick overview of what is needed:

1. Research and decide on an authenticator app that meets your organization’s needs. Most of the time, users can select their own apps, and the firm selects the libraries needed to support them. Open source and commercial solutions abound in this space now.

2. Update user accounts in each application and authentication point with the new authentication protocol and provide instructions for downloading and setting up the authenticator app.

3. Educate users on using the authenticator app, including generating one-time passwords (OTPs), scanning QR codes, etc.

4. Monitor user feedback and usage data over time to ensure a successful switch from SMS authentication to an authenticator app.

 

PS – Need a process for cataloging all of your authentication points? Here you go.

Seek Out and Remove End-Of-Life Components

Just a quick reminder, at some point during each quarter, it is a good idea to enact a process to seek out and remove any end-of-life products in your environment. This is not only a best practice but a significant risk reduction measure as well. Make it an ongoing periodic process, and you’ve got a powerful weapon against threats and emerging issues stemming from end-of-life hardware, firmware, and software in your networks.

How to Search for End-Of-Life Products In Your Environment

The first step is to identify the devices, applications, and firmware that are no longer supported by their vendors. You can do this manually or with a tool. The next step is to determine which of those devices have been deployed in your network. Once you know where they are, you need to find them. There are several ways to search for these devices:

Use Network Inventory Tools

Network inventory tools such as Nmap and Nessus will allow you to scan your entire network to locate all of the devices on your network. These tools will also tell you what operating systems and versions of software/firmware are running on the device. If you’re using a vendor-specific tool, you’ll be able to see if there are any known vulnerabilities associated with the product in many cases.

Talk to Device and Application Owners

If you don’t already have a relationship with the owners of the devices and applications, then you should start building one now. It’s important to get to know the people who own the devices and applications so that you can ask questions about how they use the devices and applications. You may even want to consider getting an end-of-life security policy together for the organization so that you can make sure everyone understands the risks of end-of-life components.

Once you have discussed the issues with the owner, remove the component if possible. Otherwise, add it to a list of components to look for workarounds or replacements. Many organizations that can’t manage to replace an end-of-life component either place it in a low trust network zone, front-end it with firewalls or ACLs, and increase monitoring and detection of the assets involved. Of course, the component should be reviewed quarterly until it can be removed from service.

Doing this process every quarter will increase your networks’ overall stability and trust worthiness, plus reduce risk and management headaches. It’s well worth your time and an effective part of an overall risk management strategy.

Workstation Logging Best Practices

Why Workstation Logging Matters

Workstations are important components of any IT infrastructure, and they’re also one of the most overlooked. Often seen as expendable, many organizations fail to see the value of workstation logs, and how they can add to the visibility and detection capabilities of the security team. Workstations are quite likely to be early indicators of attack and malware infections. They are also often super useful in identifying manual attacker behaviors and performing adequate forensics.

Organizations that don’t maintain and organize workstation logs are usually missing out on some essential data and falling short of having across-the-enterprise visibility. This is especially true if you have a decentralized work environment. Simply enabling, configuring, and properly aggregating workstation logs can give you a huge forensic advantage. Adding real-time or near real-time log parsing and event alerting makes that advantage a superpower.

What to Log

The security events an organization captures on their workstations depend largely on industry-specific needs and relevant legal requirements. However, best practices call for several events that must be recorded and logged to ensure user accountability and to help organizations detect, understand, and recover from malicious events. These events include:

  • Authentication successes and failures for all users and services
  • Access control successes and failures for all users and services
  • Session activity, including files and applications used, especially system utilities and Powershell, if applicable
  • Changes in user access rights or privileges

The Bottom Line

Get busy logging on workstations. Make sure the logs are properly configured, aggregated, and processed as a part of your detection capabilities. Don’t view workstation logs as throw-aways. Instead, see them as a powerful lens for early detection, forensics, and attack recovery.

Update:

Thanks to @TheTokenFemale for pointing out that the logs should be sent somewhere off the system. I meant that by aggregation, but to clarify, the logs should be sent, processed, and archived using a log aggregation system or toolset that includes proper chain of evidence handling, alerting, and heuristics. It should also store and archive the relevant logs according to best practices and legal and regulatory guidance. 

Why You Should Support CS2AI

What is Control Systems Cyber Security Association International (CS2AI.org)?

The mission of the Control Systems Cyber Security Association, Inc. (CS2AI) is to promote and advance cyber security education, research, and practice to protect critical infrastructure and ensure the safety and reliability of our nation’s control systems.

What does that mean? It means we are here to help you understand how to keep your control system safe from hackers, malware, and other threats. We want to ensure you know what to look for in a good cybersecurity program and how to find it.

We also want to ensure you have access to the best resources available to help you stay up-to-date on current trends and technologies.

Why does MSI support it?

Because we believe in its mission. We believe in making sure everyone has access to the information they need to make informed decisions about their own cybersecurity programs, especially when it comes to ICS.

We believe in helping people learn more about cybersecurity so they can take steps toward protecting themselves and their organizations.

We believe in supporting those who share our passion for improving the world through technology. CS2AI supports the core mission of MSI – making the online world a safer place for all of us.

How do I get involved?

It’s simple – click here to learn more about joining and the benefits of supporting the ongoing efforts to improve global cyber security.

Supply Chain Security Insights

Supply chain attacks are one of the most common cyber threats faced by organizations. They are costly and disruptive, often resulting in lost revenue and customer trust.

In this article, we’ll discuss five insights about supply chain attacks that all supply chain management and information security teams should be aware of.

#1. Supply Chains Can Be Vulnerable

Supply chains are complex networks of companies, suppliers, customers, and partners that provide goods and services to each other.

They include manufacturers, distributors, retailers, service providers, logistics providers, and others.

These entities may interact directly or indirectly via intermediaries such as banks, insurance companies, payment processors, freight forwarders, customs brokers, etc.

Supply chains are vulnerable to attack because they involve multiple parties and interactions between them. Each organization in the chain will have its own risk profile, security posture, and business model. This creates a complex environment for security risks. Attackers can target any part of the supply chain, and often focus on the weakest link, including manufacturing facilities, distribution centers, warehouses, transportation hubs, retail stores, etc.

Attackers can disrupt operations, steal intellectual property, damage reputation, and cause losses in revenue and profits.

#2. Supply Chain Security Must Include All Stakeholders

Supply chain security involves protecting against threats across the entire value stream. This means securing data, processes, systems, physical assets, personnel, and technology.

It also requires integrating security practices and technologies across the entire organization.

This includes ensuring that information sharing occurs among stakeholders, that employees understand their roles and responsibilities, and that policies and procedures are followed.

Security professionals should collaborate closely with executives, managers, and staff members to ensure that everyone understands the importance of security and has ownership over its implementation.

#3. Supply Chain Security Requires Ongoing Monitoring and Maintenance

Supply chain security requires ongoing monitoring and maintenance.

An effective approach is to continuously monitor the status of key indicators, assess risks, identify vulnerabilities, and implement countermeasures.

For example, an attacker could attempt to compromise sensitive data stored in databases, websites, mobile apps, and other locations.

To prevent these incidents, security teams should regularly review logs, audit reports, and other intelligence sources to detect suspicious activity.

They should also perform penetration tests, vulnerability scans, and other assessments to uncover potential weaknesses.

#4. Supply Chain Security Requires Collaboration Across Organizations

A single department cannot manage supply chain security within an organization.

Instead, it requires collaboration across departments and functional areas, including IT, finance, procurement, human resources, legal, marketing, sales, and others.

Each stakeholder must be responsible for maintaining security, understanding what constitutes acceptable behavior, and implementing appropriate controls.

Collaborating across organizational boundaries helps avoid silos of knowledge and expertise that can lead to gaps in security awareness and training.

#5. Supply Chain Security Is Critical to Organizational Success

Organizations that fail to protect their supply chains face significant financial penalties.

A recent study found that supply chain breaches cost United States businesses $6 trillion annually.

That’s equivalent to nearly 10% of the annual global GDP.

Supply chain attacks can result in lost revenues, damaged reputations, and increased costs.

Companies that invest in supply chain security can significantly improve operational efficiency, productivity, profitability, and brand image.

How to Rotate Your SSH Keys

SSH keys are used to secure access to and authenticate authorized users to remote servers. They are stored locally on the client machine and are encrypted using public-key cryptography. These keys are used to encrypt communications between the client and server and provide secure remote access.

When you log into a remote machine, you must provide a valid private key to decrypt the traffic. As long as the private key remains secret, only you can access the server. However, if someone obtains your private key, they can impersonate you on the network.

SSH key rotation helps prevent this type of unauthorized access. It reduces the risk that someone has access to your private key, and helps prevent malicious users from being able to impersonate you on your network.

Most security policies and best practices call for rotating your key files on a periodic basis, ranging from yearly to quarterly, depending on the sensitivity of the data on the system. Such policies go a long way to ensuring the security of authentication credentials and the authentication process for sensitive machines.

There are two ways to rotate your keys: manually, and automatically.

Manually

To manually perform key rotation, you need to generate a new pair of keys. Each time you do this, you create a new key pair. You then upload the public key file to the server you wish to connect to. Once uploaded, the server uses the public key to verify that you are who you say you are.

Automatically

An alternative approach is to use automatic key rotation. With automatic rotation, you don’t need to generate a new key pair each time you change your password. Instead, you simply update the permissions on your existing key file.

The following steps show how to configure automatic rotation.

1. Generate a new keypair

2. Upload the public key to the remote server

3. Configure the remote server to use the new keypair

4. Update the permissions on the old keypair file

5. Delete the old keypair

6. Logout from the remote server

More Information

On Linux systems, use the “man” command to learn more about the following:

    • ssh-keygen command
    • ssh-public-key command
    • upload-ssh-public-key command

The examples should provide options for command parameters and sample command output for your operating system.

For more information about the SSH protocol, you can review the Wikipedia article here.

 

A Cynefin Risk Management Use Case

Lately, I have been working on using the Cynefin framework to help a client with supply chain risk management. I’m not going to dig into the specifics here, but I wanted to share a quick workflow that we used during this process that has been very useful for us.

Risk Matrix

First, we built a risk matrix for supply chain risk. Basically, there are a number of these available via the various search engines. We took some of the most common ones and tore them down to commonalities, then built them into our matrix. We turned this into a simple spreadsheet.

Heat Mapping

Next, once we had our risk matrix, we did an exercise where we heat mapped the various risks, scoring them high/medium/low subjectively. This gave us an excellent tool to monitor our situation and communicate it with our stakeholders.

Applying Cynefin

Next, we mapped all of the high risks into the cynefin framework by researching the present state of each, whether best practices were available and relevant, being developed, or still in the experimental stage. This gave us a good idea of which problems we could simply focus on using known techniques and skills against, which ones we needed to take existing decent practices and optimize them, and which problems we needed to experiment with solutions for.

Sharing and Feedback

Overall, the exercise took around an hour to complete once we compiled the basic templates and completed the risk matrix research. For those of you facing complex risk management problems, this workflow might assist. Let me know on social media (@lbhuston) if it provides any help or if you have suggestions and feedback. Thanks for reading!

3 Common Challenges Implementing Multi-Factor Authentication

Multi-factor authentication is becoming increasingly popular among businesses and consumers alike.

However, many organizations struggle to implement the technology successfully.

Here are three challenges organizations face when implementing multi-factor authentication.

1. Lack of Awareness

Many organizations don’t understand what multi-factor authentication is or why they should use it.

They think it’s too complicated, expensive, or unnecessary.

This misconception leads to a lack of awareness about the security risks posed by weak passwords and phishing attacks.

2. Security Concerns

Some organizations believe that multi-factor authentication adds complexity and cost to their IT infrastructure.

But, in reality, multi-factor authentication doesn’t add much overhead.

Instead, it provides additional layers of protection against cyberattacks.

3. Complexity

Organizations sometimes find it difficult to integrate multi-factor authentication into their existing systems.

For example, they might have to replace old software or change user interfaces.

Some Potential Solution Ideas

If you’re struggling to implement multi-factor authentication, here are some tips to help you overcome these challenges.

1. Educate Employees About Multi-Factor Authentication

Educating employees about multi-factor authentication helps them understand its importance.

Make sure employees know that using multi-factor authentication reduces the likelihood of fraud and improves overall security.

2. Use Technology That Works For You

Multi-factor authentication tools are becoming more popular by the day. Many low-cost, or even free, solutions exist from vendors like Microsoft, DUOand others.

Look for solutions that have easy integration with your existing business infrastructure and systems.

3. Work With A Partner

A partner who has experience implementing multi-factor authentication can be helpful.

An experienced partner can provide guidance and support throughout the implementation process.

4. Make Sure The Solution Is Right For You

Before choosing a solution, make sure it meets your organization’s needs.

As always, if we can be of assistance, drop us a line to info@microsolved.com. We’d be happy to help!

3 Essential Raspberry Pi Hardening Steps

Raspberry Pi hardening is essential for securing your device against attacks.

Here are three essential Raspberry Pi hardening steps:

1. Disable SSH If You Don’t Need It

Disable SSH access to your Raspberry Pi using the following command:

sudo raspi-config

Choose “Advanced Options” and then choose “No ssh”.

2. Change Your Password

Change your password to something secure. You can use the following command:

passwd

3. Update Raspbian

Update your Raspberry Pi’s operating system to the latest version available. This ensures that your device is up to date with security patches and bug fixes.

To update your Raspberry Pi, follow these instructions:

sudo apt-get update

sudo apt-get upgrade

In summary, hardening your device by following these steps will help you protect your Pi from attacks. Making these three basic steps a part of every Pi install you do will go a long way to giving you a safer, more dependable, and more private experience.