Top Security Trends to Watch in 2025: Preparing for a New Era of Cyber Defense

By David George, Director, Deloitte India; Member of the ISACA Emerging Trends Working Group

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Rapid technological advancements, coupled with a complex and evolving threat landscape, are fundamentally reshaping how organisations look at security. The adoption of Software as a Service (SaaS) platforms, multi-tenant models, expanding third-party ecosystems, custom application development, internet-facing customer interactions, and a hybrid work culture have all significantly broadened attack surfaces. As per the latest reports from cybersecurity ventures, global cyber-crime cost will grow by 15% annually over the next five years reaching a staggering $10.5 trillion by 2025. Also as per Deloitte’s latest Global Future of Cyber Report, 40% of respondents reported experiencing six to ten cybersecurity breaches in the past year, highlighting a troubling trend that demands a reevaluation of security strategies, and according to ISACA’s State of Cybersecurity 2024 survey report, 47% of respondents expect a cyberattack on their organization in the next year.

Embracing Technological Advancements

As cyber threats evolve, so too must the technologies employed to combat them. Towards this end, the integration of AI and machine learning into security operations has emerged as a significant trend. Organisations utilise a range of security tools, including Identity and Access Management (IAM) systems, Security Information and Event Management (SIEM) tools, and cloud security solutions, which generate vast amounts of data. However, correlating information from these disparate sources to derive actionable insights can be challenging.

AI technologies can help organisations analyse large volumes of data in real time, improving threat detection and response capabilities. By identifying patterns indicative of potential breaches, AI facilitates quicker remediation and reduces reliance on manual monitoring. AI and cyber are two sides of the same coin and complement each other perfectly. As both technologies evolve, cybersecurity becomes more resilient and effective, while AI continues to improve in intelligence and efficiency. Their integration will drive advancements that contribute to a more secure and innovative technological landscape.

However, the use of AI also poses risks. Cybercriminals are leveraging these technologies to create more sophisticated attacks, such as automated phishing schemes and deepfakes. According to the 4th edition of Deloitte Future of Cyber report, the top Gen AI-related risks identified are the lack of explainability of output and information integrity issues. The above survey also points to a greater focus on other disruptive technologies such as Quantum cybersecurity. The survey shows almost 83% of respondents are assessing quantum-related risks or taking some kind of action, whether developing strategies, implementing pilot solutions, or implementing solutions at scale.

Following the release of NIST’s post-quantum encryption standards, many larger organisations—especially those in financial services—will begin the long transition to adopt the new standards.

As organisations increasingly share data and system access with partners and third parties, addressing concerns about security and privacy is crucial. With employees accessing sensitive information from various locations and devices, the need for robust endpoint security and zero-trust frameworks has never been greater. Organisations must adapt their cybersecurity strategies to address these vulnerabilities effectively.

Automation is a vital element in the security space, allowing security teams to concentrate on more strategic initiatives. This shift not only enhances efficiency but also minimises human error, which remains a significant vulnerability. However, organisations must strike a balance; over-reliance on automated systems can lead to complacency and gaps in security posture. Human expertise is still essential for interpreting data and making nuanced decisions that automated systems may overlook. Organisations these days tend to grapple with limited talent pool of cyber security resources, and it is going to get worse in the upcoming years. In this scenario, cyber security as a service will enable organisations to leverage top tier cyber security capabilities without the hassle of maintaining an in-house team. Managed security operations centers and managed detect and response services are good example of the same. This model allows businesses to scale security services up or down based on needs, helping smaller companies compete with larger enterprises in terms of cyber resilience.

Prioritising Cyber Resilience

Building cyber resilience is critical in today’s volatile environment. Resilience extends beyond having a robust security framework; it involves the ability to anticipate, withstand, and recover from cyber incidents. Organisations should conduct regular risk assessments to identify vulnerabilities and develop incident response plans tailored to their specific contexts. Utilising a combination of qualitative and quantitative techniques can help articulate the value of cybersecurity investments in business terms.

Additionally, investing in employee training and awareness is vital. Many successful cyberattacks exploit human factors. Organisations need to foster a culture of cybersecurity awareness, equipping employees with the knowledge to recognise and respond to potential threats. Modern awareness programs blend traditional training with innovative approaches like phishing simulations and behavior-influencing tactics such as incentivising secure behavior, user and security friendly system design etc. to drive a meaningful change.

Evolving Regulatory Landscape

As the regulatory landscape evolves, organisations must ensure compliance with relevant data protection and cybersecurity standards. For instance, the U.S. Securities and Exchange Commission has introduced new rules regarding cybersecurity disclosures, requiring boards to oversee cybersecurity risks. Compliance is not just about avoiding penalties; it plays a crucial role in building trust with customers and stakeholders.

In India the situation is not very different. Businesses across the board will need to re-look at their data management practices complying with the Digital Personal Data Protection Act (DPDPA). Agencies like the Indian Computer Emergency Response Team (CERT-In) will likely play a more prominent role in monitoring compliance and responding to cyber incidents. India’s National Cyber security strategy is expected to evolve by 2025 which would keep more emphasis on protecting critical infrastructure and developing cyber skilled work force. It won’t be a surprise if we see some sector specific or industry specific cyber regulations coming up especially from the financial and health care sector.

Considering the changing geopolitical climate, many organisations are adopting modular application architectures and decoupling data to enhance their security posture. Regulators increasingly emphasise the importance of cybersecurity measures, and organisations prioritising compliance are likely to gain a competitive advantage. Public-private partnerships are essential in addressing the challenges posed by cyber threats. Governments must work closely with businesses to share threat intelligence and develop best practices that enhance overall cybersecurity resilience.

Looking Ahead

As we move into 2025 and beyond, the future of cybersecurity will be shaped by ongoing technological advancements, regulatory pressures and an ever-changing threat landscape. Organisations must continually adapt their strategies, leveraging emerging technologies while remaining vigilant against new attack vectors. Thriving in this environment requires understanding emerging trends and taking decisive action to deliver measurable business impact.

Ultimately, a holistic approach to cybersecurity—integrating technology, people, and processes—will be essential for navigating the complexities of the digital landscape. By fostering a culture of security, investing in innovative solutions, and prioritising resilience, organisations can protect their assets and thrive in an increasingly interconnected world.

The future of cybersecurity extends beyond merely combating threats; it involves creating an environment where security is embedded in every organisational process. As we embrace new technologies and confront evolving challenges, the imperative to safeguard our digital assets has never been more crucial.

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