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A firewall acts as the first layer of security against cyberattacks. It is a perimeter security device that is configured to monitor & analyze incoming and outgoing traffic. It either allows or blocks data packets based on the network configuration settings.

Although a firewall is an essential component of cyber security structure for any network, some cyberattacks manage to bypass the firewall and penetrate the network.

So how do hackers succeed in bypassing a firewall?

Let’s first understand how a firewall work.

To begin with, a firewall can be in the form of physical hardware or a configured software that runs on endpoint workstations or servers connected to a network.

1. Firewall has pre-configured rules that are used to differentiate malicious traffic from regular traffic.
2. The configuration rules may include the source of traffic, destination, content of data, permission requirements, etc.
3. All incoming or outgoing traffic is analyzed against the configuration rules.
4. The traffic adhering to set rules is allowed to pass through, while the traffic contradicting the configuration rules is blocked.

Now let’s understand what techniques hackers use to bypass a firewall.

1. Exploiting Older Versions: This method is particularly used to bypass older version firewalls that lack “deep packet inspection” or DPI features. DPI enables the firewall to monitor & analyze the incoming & outgoing data packets for malicious code. However, the lack of DPI features reduces the capability of a firewall to detect & block malicious traffic. Threat actors take advantage of this reduced capability & penetrate the firewall by sending phishing emails with a link to inject malicious code into the system.
2. IoT Devices: Large number of IoT devices connected to a network and difficulty in updating them make IoT devices highly vulnerable. This problem is enhanced by UPnP (Universal Plug and Play) feature of IoT devices that enables them to communicate freely with each other. Threat actors take advantage of the automated protocol implemented by IoT devices which allows them to bypass the firewall & connect to the router. Once the threat actors bypass the firewall, they use this path to deliver malware to the router & other devices connected to the WiFi.
3. Exploiting Outgoing Traffic: If a firewall is configured to monitor incoming traffic only, the threat actors can steal data & send it to their own server unnoticed. Some organizations use selective configuration & set rules that allow only outgoing traffic only via HTTP, HTTPS, & DNS protocols. This limits the problem but doesn’t act as a complete solution. The threat actors can still use DNS to move any data across the firewall, as the data moving out via DNS is not monitored or blocked.
4. Social Engineering Attacks: In a social engineering attack, hackers do not try to bypass the firewall. Instead, they gain legitimate access by posing as an allowed user to trick the employees. The hackers may pose as a system admin, a team member, or an IT support executive to gain remote access to the system and get past the firewall. This can be prevented by enabling multi-factor authentication to verify the identity of the person requesting access.
5. SQL Injection Attacks: Traditional firewalls such as network firewall, generally operates at the network, transport, & session layers. This keeps the application layer unmonitored & exposed to attacks that are designed to target the application layer, such as SQL Injection attacks. Attackers take advantage of application vulnerabilities to inject malicious code into the system & gain access to data such as login credentials, financial details, etc.
6. Misconfiguration: A misconfigured firewall offers an easy passage to hackers. This may happen when an organization makes infrastructure changes or sets highly permissive firewall rules. This lowers the capability of the firewall to identify and block malicious traffic.

To know more about cyber security solutions and how to protect your network from cyberattacks, contact Centex Technologies. You can contact Centex Technologies at Killeen (254) 213 - 4740, Dallas (972) 375 - 9654, Atlanta (404) 994 - 5074, and Austin (512) 956 – 5454.

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Despite deploying security precautions to protect their networks from cyberattacks, numerous firms have experienced network breaches. Nowadays, threat actors use complex and sophisticated tactics to infiltrate a network, the impact of which may not be mitigated by traditional methods. The proactive procedure of checking the network for any hostile activity is referred to as cyber threat hunting.

Cyber threat hunting and cyber threat intelligence

Continuously monitoring the network for suspicious activity and gaps in the organization's ecosystem is required for cyber threat hunting. By analyzing previous data from a variety of sources, cyber threat hunting techniques keep a watch for potential new risks. Threat hunting techniques can discover, identify, and fix security flaws, vulnerabilities, and malicious behavior that normal security measures frequently fail to detect.

How to start hunting threats inside the Cyber or IT infrastructure?

Proactive preparation is the key to success in cyber security operations. It is critical to establish a solid foundation before beginning to develop the cyber threat hunting program.

A business is advised to take the following actions

• Plan a cyber-threat hunting program - To begin cyber threat hunting, map the security process to any existing security model, such as the MITRE ATT&CK architecture. It is also recommended that the security posture be assessed to see how vulnerable the organization is to hazards and attacks.
• Maturing the threat hunting program - After determining the level of cyber maturity, the next step is to decide whether the cyber threat hunting process should be carried out internally, externally, or a combination of both.
• Identifying and addressing gaps in tool and technology implementation -  Analyze the current tools and determine what is required for successful threat hunting and the effectiveness of preventative technology.
• Identifying and addressing security personnel training gaps - Threat detection necessitates the skills of an expert. If the organization lacks experienced internal specialists, it is recommended to use a third-party source.
• Adoption of a cyber-threat hunting strategy - Any firm must have a solid cyber threat hunting strategy which can help in mitigating the impact of cyberattacks on its infrastructure.

What kind of professionals can perform active cyber threat hunting?

Cyber threat hunting calls for knowledge of all the systems and data in use at the firm. This has to be combined with exquisite expertize in threat intelligence analysis, reverse engineering and malware analysis. Threat hunters must also be excellent communicators who can present their results and contribute to the business case for sustained threat hunting resources. It is preferable to put together a team of curious, analytical issue resolvers who have these talents and are motivated to further improve them. The willingness to keep learning is another essential quality of effective cyber threat hunters. Cyber threats are continuously changing, thus threat hunters must be dedicated to keeping their knowledge current by following researchers, participating in online groups, and attending industry forums, which enables them to learn about new strategies.

Advanced next-generation technology and human professionals work in unison to create an effective threat hunting process. To find any potential risks and harmful activity, the threat hunters need investigation tools and other inputs. These tools make it possible for threat hunters to find and examine the risks. For example, XDR (Extended Detection and Response) collects all the signals from the IT ecosystem and EDR (Endpoint Detection and Response) delivers inputs from the endpoint solution. These tools aid in the earlier identification of any possible threats.

Cyber threat hunters should be aware of the automated procedures, alarms, and behavior analyses that have already been run on the data to avoid duplicating work. Threat hunting may go down a lot of rabbit holes, therefore it demands agility. However, there should be a structured framework in place to direct the hunt and allow for any necessary withdrawal from the rabbit holes.

Contact Centex Technologies for more information on cyber threat hunting. You can contact Centex Technologies at Killeen (254) 213 - 4740, Dallas (972) 375 - 9654, Atlanta (404) 994 - 5074, and Austin (512) 956 – 5454.

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A growing number of companies are implementing rules that assure greater compliance with government requirements and safe storage of critical company data. Loss of business data may not only result in penalties but also cause loss of reputation, customer trust, & finances.

Following are the most common methods used by businesses to protect corporate communications from cyberattacks:

• PII (Personally Identifiable Information) data usage and security: A company's corporate data usage policy should explicitly define what constitutes acceptable use of the data. The PII data policies must evidently state whether corporate and/or personal use is permitted, and if yes, then what will be the scope of it. If employees are granted personal use, steps should be taken to outline what types of correspondence will be considered unacceptable or offensive.

• Installing DLP (Data Loss Prevention) tools to prevent unauthorized transmission of company secrets: Up to 90% of a company's intellectual capital now exists in digital form. It has been estimated that the loss of critical business information via cybersecurity incidents to more than USD 24 Billion per year. It's vital that every employee understands the critical seriousness of transmitting company data. Hence, a deploying DLP solution is beneficial to not just detecting but also preventing the loss of critical and sensitive data via business communications.

• Complying with business-specific standards and government regulations: The HIPAA (Health Insurance Portability and Accountability Act) and the Gramm-Leach-Bliley Act regulate data privacy. The acts detail specific measures that regulated companies must take to adequately protect customer data. The Securities and Exchange Commission requires organizations to comply with certain privacy and auditing standards, security controls, and mechanisms.

• Monitoring employees’ behaviors and usage of internet and corporate devices: The company is eventually responsible for any employee’s misuse of corporate devices, assets, and data. Hence it is required to responsibly monitor, review and inspect its employees' communications. The allowed use and acceptable behavior should be articulated in a company’s communications policy, and each employee should be required to sign an agreement for the same.

• Creating a Cybersecurity program and install security tools to strengthen the security posture: Integrations with applications that can scan messages and attachments are essential. Installation of SOC (Security Operations Center) along with the requisite software solutions is of utmost importance to strengthen the security posture of the organization.

• Categorizing different types of information and their scope of usage: Filters should be established to look for potentially offensive or defamatory business correspondence. All outbound data transmission should be scanned for project names and other keywords that might indicate that confidential content may be about to leave the organization. Alerts that are flagged by the content filtering tools should be blocked outright or stripped off their attachments.

• Implementing PoLP (Principle of Least Privilege): Within the company, a completely secure-communications strategy should establish graduated degrees of privilege for users. IT administrators should leverage this categorization to apply contextual logic to groups of content. For example, different types of sensitive corporate content should demand different levels of clearance to be approved for data and information distribution.

• Deploying an appropriate encryption scheme to protect corporate email data: To safeguard every digital material that is approved for transmission beyond a specific sensitivity threshold, strict criteria should be implemented. Unless linked via a VPN, personnel data related to HR, blueprints, contract agreements, business strategies, and other sensitive information should not be transmitted between individuals in remote locations.

• Implementing using VPNs (Virtual Private Networks) to facilitate remote working: VPN Policies can be used to establish trusted communication channels between distributed sets of users that eliminate the threat of eavesdropping. Based on the identity of the sender and recipient, policy rules can be created to secure all communications between particular individuals or specific groups of users.

• Privacy and Security of data-in-transit and data-at-rest: Data policy rules can be set to secure the data stored in servers at the backend as well as the data getting transmitted and exchanged between senders and recipients. Encrypting all communications between certain persons of importance (for example, the CEO and CFO) or groups of users (remote finance departments, legal division and outside law firm, executive management, and R&D, etc.) is of utmost importance.

Securing corporate communications should start with the company's formation. Physical controls must be in place before new gadgets & infrastructure may be incubated. To safeguard company communications, qualified security staff must be employed and trained. 

Centex Technologies provides advanced cybersecurity solutions to businesses. To know more about securing business communications, contact Centex Technologies at Killeen (254) 213 - 4740, Dallas (972) 375 - 9654, Atlanta (404) 994 - 5074, and Austin (512) 956 – 5454.

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Digital wallets are virtual wallets that store financial information and identification documents and allow users to conduct online/offline transactions. Depending on the type of digital wallet, it may contain debit, credit, prepaid, and loyalty card data, as well as personal information like a driver's license, health card, and other identification documents. Cyber criminals can make efforts to get access to this information for monetary benefits.  In order to stay protected, it is important to have in-depth knowledge of the prevailing security risks.

Following is a list of some of the well-known security risks associated with digital wallets:

Attempting to tamper with the application connected to the digital wallet

Backdoor in a mobile payment app allows an attacker to steal login credentials and transfer them to a server controlled by the attacker. This may allow attackers to use information in digital wallet for fraudulent activities.

Exploiting the vulnerabilities of the application connected to the digital wallet

Unauthorized access to mobile payment capability might arise as a result of an attack on mobile payment APIs used for in-app purchases. This may allow attackers to carry out fraudulent transactions.

Theft of bank and credit card accounts linked to the mobile payment app can also lead to fraud. A fraudster might potentially take advantage of flaws in the registration process to add a new mobile device to the user profile and use it to make fraudulent transactions.

Malware/rootkits installation

Rootkit is a serious threat vector that may be used to directly monitor and hijack/alter API requests as they are marshaled to and from the API endpoint connected to the digital wallet. Attackers may manipulate variables in transit, such as payment amounts.

Permissions for gaining access to the device operating system

With the approval of the user, an OS may grant access to particular resources. Even if a program isn't malicious, having certain permissions might allow it to access sensitive information which can be utilized by another app to get unauthorised access to information stored in the digital wallet installed on the device.

Verifying identities of users

On a stolen device, if a hacker is able to circumvent biometric authentication, user’s complete financial/ payment information would be compromised and payments can be made. In some cases, users may authorize payments by just inputting the lock screen pattern on a mobile phone. Because this information can be easily accessed by eavesdropping, it might encourage opportunistic attackers to hijack a device and make payments on the victim’s behalf.

Payments that are illegitimate

If the card issuer’s terms and conditions are not followed, the issuer may refuse to take culpability for fraud.

Payment transaction accountability

To make a payment, the providers demand fingerprint authentication. There have been instances where fingerprint authentication has been bypassed or compromised on mobile devices. Also, when several users have access to the device, accountability is compromised and it might be difficult to identify the individual who made the payment.

Stolen equipment has a larger attack surface

If a device connected to a digital wallet is stolen, criminals may be able to acquire access to payment cards.

Phishing and social engineering assaults

As digital wallets become more widely adopted, attackers may be enticed to launch attacks imitating genuine applications to seek credit card details. They may also resort to phishing and social engineering in an attempt to persuade users to provide the information required to carry an attack.

Centex Technologies provides advanced cybersecurity solutions to businesses. For more information, contact Centex Technologies at Killeen (254) 213 - 4740, Dallas (972) 375 - 9654, Atlanta (404) 994 - 5074, and Austin (512) 956 – 5454.

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