Quality of faculty: that’s what compelled Matthew Belcher, an independent freelance web developer and student working towards a Bachelor in Computer Science, to enroll in the Open Institute of Technology (OPIT), allowing him to work with some of the top professionals in his chosen industry.

Matthew was recently elected program representative for the course, helping to guide the interests of over 100 students across the globe in discussions with the area chair and director to ensure that the course is fit for purpose and meets student needs.

Why OPIT?

In a recent interview, Matthew told us that the reason he chose OPIT to continue his education was the expertise of the faculty. He shared that he conducted intensive research into a variety of programs that would help him shape his interest and skill in technology into potential career opportunities.

Matthew felt that the OPIT faculty stood out as not just great teachers, but top-tier professionals with real-world experience in the kinds of industries he wants to work in. Their professional roles mean they offer an up-to-the-minute understanding of the changing market.

The Computer Science Program

The BSc in Computer Science is a fully accredited course delivered completely online over six 13-week terms.

The program delivers foundational skills, both theoretical and practical, in all aspects of computer science, including programming, software development, databases, cloud computing, cybersecurity, data science, and artificial intelligence. Students deliver a dissertation or project in the final term, and in term five, they can choose five electives from a pool of 27, or choose to specialize in one of five fields:

  • Data Science and Artificial Intelligence
  • Cloud Computing
  • Cybersecurity
  • Metaverse and Gaming
  • Full Stack Development

The BSc in Computer Science is aimed at students interested in software development and engineering, data science, web development, app and game development, IT business analysis, cybersecurity, and database architecture.

Meet the Faculty

Now let’s meet some of the incredible faculty who influenced Matthew’s decision to select OPIT.

Art Sedighi

As well as teaching at OPIT, Art Sedighi is an adjunct professor at Johns Hopkins University and a professor at Purdue University Global. He was previously a partner at CDI Global, a senior cybersecurity solution architect at Amazon AWS, and head of high-performance computing and grid engineering at the Bank of America.

Sedighi has 20 years of experience planning, designing, developing, and having end-to-end ownership of cloud solutions. He has managed cross-functional teams and been responsible for driving adoption strategies across enterprises.

Sedighi teaches software engineering and cloud adoption in the BSc in Computer Science and is also a professor in the BSc in Digital Business program.

Lokesh Vij

As well as teaching in OPIT’s Computer Science Program, Lokesh is a database architect at Broadcom Inc., a semiconductor manufacturing firm in Canada, and a part-time professor at Seneca Polytechnic in Toronto.

Vij describes himself as a cloud and data evangelist, educator, and mentor. With over 20 years of rich experience, he has designed, developed, and delivered enterprise-scale data solutions across disparate source systems, data formats, and relational and non-relational databases.

His proven expertise includes enhancing business profitability by leveraging insights derived from diverse data sets, constructing decision support systems that convert transactional data into analytical formats. This, combined with data visualization techniques, allows him to articulate and clarify business insights effectively.

In the BSc in Computer Science program, he teaches cloud computing infrastructure, cloud development, cloud computing automation and ops, and cloud data stacks. He is also a professor of the BSc in Digital Business and the MSc in Applied Data Science & AI, also covering big data and cloud computing.

Tom Vazdar

Tom Vazdar is OPIT’s area chair for cybersecurity and also the CEO of Riskoria, which focuses on cybersecurity strategies. His areas of expertise include strategy services, AI and cybersecurity, AI infrastructure development, and compliance assurance and risk management.

Vazdar teaches computer security in both the BSc in Computer Science and the BSc in Digital Business programs, as well as for the MSc in Enterprise Cybersecurity.

Sylvester Kaczmarek

Sylvester Kaczmarek is a former Chief Science Officer at WeSpace Technologies and a former AI Mentor and Researcher at NASA. He is now an independent executive leading secure, safe, and resilient AI-driven space innovations, a science communicator, and an advisor to deep tech investors, governments, and startups.

In the past, he has specialized in the integration of artificial intelligence, robotics, cybersecurity, and edge computing in aerospace applications.

In OPIT’s BSc in Computer Science program, Kaczmarek teaches cartography and secure communications, secure software development, and parallel and distributed computing. He also teaches in the MSc in Enterprise Cybersecurity program.

Lorenzo Marvardi

As well as teaching at OPIT, Lorenzo Marvardi is a managing director at Accenture. With a background in cybersecurity management and security consulting, he has 15 years of experience as a security professional and executive, implementing security programs across different industries and geographies.

Marvardi teaches cybersecurity in both the BSc in Computer Science and the BSc in Digital Business programs.

Khaled Elbehiery

Khaled Elbehiery is a senior director and network engineer at Charter Communications. As well as teaching for OPIT, he is a part-time professor at Park University and DeVry University, both in the United States.

He describes himself as a professor, scientist, inventor, and author. He has publications on cloud engineering, quantum computing, space, robotics, bionics, microgravity, and modern educational methodologies.

Elbehiery teaches cloud and IoT security and computer networks on both the BSc in Computer Science and the MSc in Enterprise Cybersecurity programs.

Francesco Derchi

Francesco Derchi is a brand, innovation, and digital expert with over 14 years of experience. He is chair of digital business at OPIT, an advisory board member for Arsene Lippens, on the faculty at EHL in Switzerland and the Universita degli Studi di Genova, plus course director and contributor to the Harvard Business Review Italia.

Derchi teaches business strategy and digital marketing on both the BSc in Computer Science and the BSc in Digital Business, as well as on the MSc in Digital Business and Innovation.

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ComputerWeekly: What are the best practices for securing AWS tech stacks?
OPIT - Open Institute of Technology
OPIT - Open Institute of Technology
Jun 2, 2025 6 min read

Source:


By Nicholas Fearn

An AWS tech stack can aid business growth and facilitate efficient operations, but misconfigurations have become all too common and stall this progress

Amazon Web Services (AWS) has become the lifeblood of millions of modern businesses, both big and small. But while this popular cloud platform enables them to manage and scale their operations with impressive speed, simplicity and affordability, it also represents a significant security and privacy risk if mismanaged by users.

An insecure or improperly configured AWS tech stack provides a gateway for cyber criminals to enter corporate systems and sensitive files. The biggest example of this occurred in 2019, when an ex-Amazon employee stole the data of 100 million Capital One customers simply by exploiting a misconfigured web application firewall in the financial service giant’s AWS tech stack.

The incident ended with a high-profile lawsuit in which the financial services giant had to pay a $190m (£140m) settlement to affected customers. Other big businesses impacted by similar incidents include Accenture, Facebook, LinkedIn, Pegasus Airlines, Uber and Twilio. So, what can organisations do to secure their AWS tech stacks?

One of the biggest risks of an insecure AWS tech stack is data theft and exfiltration by cyber criminals, according to Rik Turner, chief cyber security analyst at Omdia. He explains this can happen when S3 buckets, which contain large volumes of files and sensitive metadata, aren’t set up properly.

As a result, S3 bucket access rights can be granted to employees who don’t require them for their roles, leading to insider threats. Or, worse, these crucial storage objects can end up on the public internet for anyone to access and abuse.

Sensitive corporate and customer data exposed in this way can lead to businesses experiencing “enormous financial losses”, says Sylvester Kaczmarek, a professor at online higher education provider the Open Institute of Technology. Their finances take a hit through regulatory fines, customer lawsuits and expensive recovery efforts that can last for months. Reputational damage is often substantial, too.

Additionally, weak or reused user credentials, the absence of cyber security logging and monitoring capabilities, and weaknesses in cyber defences like firewalls leave AWS tech stacks dangerously exposed to data breaches, he adds.

Data breaches can also stem from poorly secured Relational Database Service databases, Elastic Compute Cloud (EC2) instances and application programming interfaces, explains Bob McCarter, chief technology officer of risk and compliance software provider Navex. Erroneous identity and access management policies, a lack of multi-factor authentication, unpatched software and open ports are common security issues affecting these AWS services.

Besides costly data breaches, the day-to-day operations of modern businesses can grind to a halt in the aftermath of an EC2 instance compromise. The latter results in “impaired performance”, and even “a complete malfunctioning” of critical applications and workloads, explains Turner.

These issues are largely the product of mistakes made by AWS users and not cyber attacks targeted at Amazon, according to Neil MacDonald, vice-president and distinguished analyst at Gartner. But he emphasises that mistakes can easily happen due to the “sheer size, complexity and rate of change of AWS deployments”, adding that they are “impossible” to monitor without using appropriate security tools from AWS or other technology companies.

It is, therefore, the responsibility of AWS users to take steps to protect the data they upload to AWS cloud resources. This is enshrined in the cloud security shared responsibility model, with the responsibility of cloud companies like AWS being to secure the infrastructure they sell to customers.

Best practices to secure AWS tech stacks

When it comes to securing AWS tech stacks, many effective best practices are laid out in the AWS Well-Architected framework. McCarter explains that it offers a comprehensive guide for access management, infrastructure management, data privacy, application security, and cyber threat monitoring and detection.

Crystal Morin, cyber security strategist at cloud security company Sysdig, is another vocal supporter of this framework. She says it’s great for handling the prevention, protection, detection and response sides of cyber security. “This model helps you think through how to prevent problems in the first place, ensure your workloads have security in place, and then have the right tools in place to detect and respond to cloud security threats if and when they do take place,” says Morin.

As well as adhering to AWS’s own security best practices, MacDonald points out that the Center for Internet Security also offers advice for creating and maintaining a secure AWS tech stack. He adds that many modern cyber security tools are aligned with the latest AWS best practices, whether provided by Amazon or an outside organisation.

Given that lots of AWS-related security incidents are caused by inadequate access controls, Jake Moore – global cyber security advisor at antivirus maker ESET – urges organisations to implement the principle of least privilege to ensure access rights are limited to those who require them for their roles. This should be enforced as part of a wider identity and access management strategy.

Of course, staff hiring, attrition and promotion can make it difficult to manage AWS access controls. Still, Moore says businesses can use cyber security monitoring tools to track these changes and ensure access controls are amended accordingly, minimising security incidents. In addition to investing in these tools, he urges organisations with AWS stacks to regularly audit their cyber security posture to ensure security gaps are identified and closed swiftly. Automated analysis tools can help with this.

To ensure cyber criminals can’t steal sensitive data stored on and travelling between AWS servers, OPIT’s Kaczmarek says organisations must encrypt data when it’s at rest and in transit. Utilising the AWS Key Management service will help protect data at rest. Meanwhile, tight network security configurations are the key to securing transit data and wider network traffic. These should apply for virtual private clouds, Security Groups and Network Access Control Lists, according to Kaczmarek.

Organisations operating AWS tech stacks can log all network traffic using AWS CloudTrail and monitor it using AWS CloudWatch, says Kaczmarek. He adds that these efforts can be complemented by using multi-factor authentication, implementing security patches when they’re issued and replacing manual processes with infrastructure as code. The previous step is paramount for “consistency and auditing”, he claims.

 

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OPIT Student Interview: Discovering the OPIT Faculty With Matthew
OPIT - Open Institute of Technology
OPIT - Open Institute of Technology
May 29, 2025 6 min read

Quality of faculty: that’s what compelled Matthew Belcher, an independent freelance web developer and student working towards a Bachelor in Computer Science, to enroll in the Open Institute of Technology (OPIT), allowing him to work with some of the top professionals in his chosen industry.

Matthew was recently elected program representative for the course, helping to guide the interests of over 100 students across the globe in discussions with the area chair and director to ensure that the course is fit for purpose and meets student needs.

Why OPIT?

In a recent interview, Matthew told us that the reason he chose OPIT to continue his education was the expertise of the faculty. He shared that he conducted intensive research into a variety of programs that would help him shape his interest and skill in technology into potential career opportunities.

Matthew felt that the OPIT faculty stood out as not just great teachers, but top-tier professionals with real-world experience in the kinds of industries he wants to work in. Their professional roles mean they offer an up-to-the-minute understanding of the changing market.

The Computer Science Program

The BSc in Computer Science is a fully accredited course delivered completely online over six 13-week terms.

The program delivers foundational skills, both theoretical and practical, in all aspects of computer science, including programming, software development, databases, cloud computing, cybersecurity, data science, and artificial intelligence. Students deliver a dissertation or project in the final term, and in term five, they can choose five electives from a pool of 27, or choose to specialize in one of five fields:

  • Data Science and Artificial Intelligence
  • Cloud Computing
  • Cybersecurity
  • Metaverse and Gaming
  • Full Stack Development

The BSc in Computer Science is aimed at students interested in software development and engineering, data science, web development, app and game development, IT business analysis, cybersecurity, and database architecture.

Meet the Faculty

Now let’s meet some of the incredible faculty who influenced Matthew’s decision to select OPIT.

Art Sedighi

As well as teaching at OPIT, Art Sedighi is an adjunct professor at Johns Hopkins University and a professor at Purdue University Global. He was previously a partner at CDI Global, a senior cybersecurity solution architect at Amazon AWS, and head of high-performance computing and grid engineering at the Bank of America.

Sedighi has 20 years of experience planning, designing, developing, and having end-to-end ownership of cloud solutions. He has managed cross-functional teams and been responsible for driving adoption strategies across enterprises.

Sedighi teaches software engineering and cloud adoption in the BSc in Computer Science and is also a professor in the BSc in Digital Business program.

Lokesh Vij

As well as teaching in OPIT’s Computer Science Program, Lokesh is a database architect at Broadcom Inc., a semiconductor manufacturing firm in Canada, and a part-time professor at Seneca Polytechnic in Toronto.

Vij describes himself as a cloud and data evangelist, educator, and mentor. With over 20 years of rich experience, he has designed, developed, and delivered enterprise-scale data solutions across disparate source systems, data formats, and relational and non-relational databases.

His proven expertise includes enhancing business profitability by leveraging insights derived from diverse data sets, constructing decision support systems that convert transactional data into analytical formats. This, combined with data visualization techniques, allows him to articulate and clarify business insights effectively.

In the BSc in Computer Science program, he teaches cloud computing infrastructure, cloud development, cloud computing automation and ops, and cloud data stacks. He is also a professor of the BSc in Digital Business and the MSc in Applied Data Science & AI, also covering big data and cloud computing.

Tom Vazdar

Tom Vazdar is OPIT’s area chair for cybersecurity and also the CEO of Riskoria, which focuses on cybersecurity strategies. His areas of expertise include strategy services, AI and cybersecurity, AI infrastructure development, and compliance assurance and risk management.

Vazdar teaches computer security in both the BSc in Computer Science and the BSc in Digital Business programs, as well as for the MSc in Enterprise Cybersecurity.

Sylvester Kaczmarek

Sylvester Kaczmarek is a former Chief Science Officer at WeSpace Technologies and a former AI Mentor and Researcher at NASA. He is now an independent executive leading secure, safe, and resilient AI-driven space innovations, a science communicator, and an advisor to deep tech investors, governments, and startups.

In the past, he has specialized in the integration of artificial intelligence, robotics, cybersecurity, and edge computing in aerospace applications.

In OPIT’s BSc in Computer Science program, Kaczmarek teaches cartography and secure communications, secure software development, and parallel and distributed computing. He also teaches in the MSc in Enterprise Cybersecurity program.

Lorenzo Marvardi

As well as teaching at OPIT, Lorenzo Marvardi is a managing director at Accenture. With a background in cybersecurity management and security consulting, he has 15 years of experience as a security professional and executive, implementing security programs across different industries and geographies.

Marvardi teaches cybersecurity in both the BSc in Computer Science and the BSc in Digital Business programs.

Khaled Elbehiery

Khaled Elbehiery is a senior director and network engineer at Charter Communications. As well as teaching for OPIT, he is a part-time professor at Park University and DeVry University, both in the United States.

He describes himself as a professor, scientist, inventor, and author. He has publications on cloud engineering, quantum computing, space, robotics, bionics, microgravity, and modern educational methodologies.

Elbehiery teaches cloud and IoT security and computer networks on both the BSc in Computer Science and the MSc in Enterprise Cybersecurity programs.

Francesco Derchi

Francesco Derchi is a brand, innovation, and digital expert with over 14 years of experience. He is chair of digital business at OPIT, an advisory board member for Arsene Lippens, on the faculty at EHL in Switzerland and the Universita degli Studi di Genova, plus course director and contributor to the Harvard Business Review Italia.

Derchi teaches business strategy and digital marketing on both the BSc in Computer Science and the BSc in Digital Business, as well as on the MSc in Digital Business and Innovation.

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