The shared responsibility model divides responsibility for network security among all members of your organization. This means that while your IT team handles certain aspects of network security, everyone else plays a role in keeping your network safe. 

For example, your IT team ensures that firewalls and antivirus software are up to date. But it's up to everyone to follow best practices, like using strong passwords and being cautious of phishing emails.

Therefore, the shared responsibility model is about collaboration. It entails working together to maintain a secure network. Everyone has a part to play, from the IT team down to individual users whose devices connect to the network. 

The basics of shared responsibility

Distribution of responsibilities

The shared responsibility model means that both the IT team and everyone else in the company have distinct but complementary roles to play.

Your IT team is like the backbone of your network security. They set up and maintain critical protective measures. For instance, they install and update firewalls to block unauthorized access and deploy antivirus software to protect against malware. 

The IT team also configures multi-factor authentication (MFA), ensuring that it's technically sound. Moreover, they push out essential software updates to safeguard your devices from vulnerabilities. These actions form the bedrock of your network security, but they are only half the story.

On the flip side, the actions of individual employees are equally vital. When it comes to MFA, it’s up to them to use it every time they log in. Skipping MFA or sharing authentication codes makes the whole system vulnerable, despite the IT team's best efforts. 

Similarly, network users must install software updates as soon as they are rolled out. Those notifications aren’t just annoying pop-ups; they are crucial defenses against potential threats. Ignoring them can leave an open door for attackers, nullifying the IT team's hard work.

Phishing attacks are another area where everyone’s vigilance is essential. While the IT team sets up email filters and keeps an eye out for suspicious activity, general network members are the first line of defense. 

If an email looks suspicious, the recipient should report it to IT immediately instead of clicking on links or downloading attachments. This not only protects them individually but also helps the whole company by catching potential threats early.

Even everyday practices contribute significantly to network security. For instance, using strong, unique passwords and changing them regularly is something only individual network users can control. These simple actions can drastically reduce the risk of unauthorized access. 

So, while the IT team provides the tools and technical support, it’s up to network users to use them wisely. This partnership is the essence of the shared responsibility model. It is how you keep your network secure and resilient.

Collaboration between parties

While your IT team handles the technical defenses, employees must support and follow through on these efforts to ensure maximum protection.

Picture this: the IT team has just installed the latest firewall and antivirus updates. They’ve worked hard to configure these defenses properly. However, if network device users don't adhere to security protocols, like not downloading software from untrusted sources, they compromise those defenses. 

It’s a two-way street. The IT team can set up the best security systems, but if some don’t follow guidelines, you are leaving gaps in your defenses.

Take multi-factor authentication (MFA) again as an example. The IT team might configure MFA and ensure it’s technically sound, but this effort is wasted if people skip using it. 

By using MFA every time you log in, you are actively participating in making your network secure. If one of you forgets or decides it’s not necessary, the entire system is weakened. So, your IT experts can only do so much; individuals’ actions are the final firewall.

Similarly, phishing is a relentless threat. The IT team can set up email filters and monitor for suspicious activities, but they can’t catch everything. Network users need to be vigilant too. If an email looks off, reporting it immediately to IT can prevent a potential breach. 

One cautious click can stop an attacker in their tracks. Other people in the company who connect to the corporate network must be the eyes and ears on the ground, supplementing the technical defenses with their alertness.

Service providers' responsibilities under the shared responsibility model

Service providers play a crucial role in the shared responsibility model. They handle the infrastructure and services that underpin your network security. Think of them as your external partners who provide the technology and platforms you rely on daily.

For instance, your cloud service providers maintain the physical security of their data centers. They ensure that the servers are protected from unauthorized access and natural disasters. This is something beyond your control but vital for your network's security foundation.

Your email service provider is another key player. They implement spam filters and safeguard your emails against external threats. While they block many phishing attempts before they even reach your inboxes, it's still up to you to stay alert and report anything suspicious. This partnership strengthens your defenses against email-based attacks.

Software providers also take on significant responsibilities. They develop and push out updates to address vulnerabilities in their applications. When your IT team deploys these updates, they're leveraging the work done by these vendors. By installing updates promptly, you play your part in this security chain.

Another example is your multi-factor authentication (MFA) provider. They ensure that the MFA system is robust and reliable. This involves constant monitoring and updating to stay ahead of potential threats. However, their efforts are only effective if you use MFA consistently. Skipping this step would be like having a top-notch security system but never turning it on.

Service providers also conduct regular security audits and compliance checks. These audits help you meet regulatory requirements and ensure your systems are secure. While they manage these audits, it's up to you to cooperate and provide the necessary information, ensuring compliance.

Service providers give you the tools and resources for a secure network. They maintain and protect the infrastructure, while you use their services responsibly and stay vigilant. This is essential for maintaining a strong and resilient security posture.