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How Access to Whatsapp Encryption May Affect your Privacy

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In the wake of last week’s terrorist attack in Westminster, the British government on Sunday disclosed that its security services must have access to encrypted messaging applications such as WhatsApp, revealing it was used by the killer behind the parliament attack.

In this piece, Yudala – the largest online and offline retail chain – examines the benefits of WhatsApp encryption and why access to these encrypted messages by a third-party may mean less privacy for you…

Created in 2009 as an alternative to text messaging, WhatsApp is today one of the world’s most popular instant messaging service with more than one billion users in 180 countries.

According to a May 2016 report from research firm SimilarWeb, WhatsApp is the top chat app in 109 countries, including Brazil, India, and the United Kingdom. Facebook acquired WhatsApp in 2014 to make a bigger play in the rapidly-growing messaging market, along with its own Messenger platform. At the time the deal was announced, WhatsApp had 450 million users worldwide.

Khalid Masood, the 52-year-old Briton who killed four people before being shot dead in a rampage in Westminster on Wednesday, reportedly used WhatsApp to send a message some moments before the assault – a discovery that has seen the UK government determined to gain access to the end-to-end encrypted messages sent through the app.

Home Secretary Amber Rudd affirmed that it was “completely unacceptable” that police and security services had not been able to crack the heavily encrypted service.
“You can’t have a situation where you have terrorists talking to each other — where this terrorist sent a WhatsApp message — and it can’t be accessed,” she said.

WHAT DOES WHATSAPP END-TO-END ENCRYPTION MEAN?
WhatsApp’s end-to-end encryption ensures only you and the person you’re communicating with can read what is sent and nobody in between, not even WhatsApp. Your messages are secured with a lock and, only the recipient and you, have the special key needed to unlock and read your message. For added protection, every message you send has a unique lock and key. All of this happens automatically: no need to turn on settings or set up special secret chats to secure your messages.

It is also important to note that end-to-end encryption is always activated, provided all parties are using the latest version of WhatsApp. There is no way to turn off end-to-end encryption. End-to-end encryption is available when you and the people you message are on the latest versions of WhatsApp.

The benefits of end-to-end encryption on WhatsApp are numerous and has remained one of the major factors that has contributed to the growing popularity of the Facebook-owned service. These benefits include:

Privacy: With end-to-end encryption in place, people can communicate with each other and express themselves freely without fear of unintended people gaining access to their private stuff. This way, you can talk to your doctor about your medication, hold intimate chat sessions with your spouse/partner or have a discussion with an associate about a business proposal without the fear of being overheard or the call being tapped.

Safe group chats: Group chats are also safely encrypted, thereby lending an air of confidentiality to messages sent in such a forum. With encryption featuring in group chats, non-group members will have no clue at all about the happenings in the group. This makes it more attractive for people with like minds and interests to discuss their affairs in WhatsApp groups without the fear of being overheard.

Encryption works by default: Encryption setting is turned on by default by WhatsApp in all devices. If you are running the version of WhatsApp that has encryption support, you will be informed of this on your chat screen when you send messages across along with a lock symbol next to the confirmation screen. You can also verify the default ON setting by making use of a unique QR code on the phone of each contact in your list.

In case, for some reason, the default encryption setting does not get activated, you can do it yourself through a simple process. In your chat window, just click on your contact’s name at the top of the window to display his or her profile details. You will find an option to turn the encryption on.

WhatsApp can’t read your messages: End-to-end encryption means that even if it wanted to, WhatsApp cannot gain access to your messages. In other words, only the sender and receiver can read intended messages.

Not even WhatsApp employees or hackers will be able to gain access to the messages sent or received. This applies to any form of messages – text, images, videos and files.

Encryption works on all devices: The encryption in WhatsApp works using an open-source protocol known as Signal that is developed by an organization called Open Whsiper Systems. This company has worked in close association with WhatsApp in determining its requirements and the level of encryption to be provided.

The app ensures that smartphones featuring this app support the encryption and decryption keys to be applied to messages going out and coming into the device.

The encryption technology is supported by all recent WhatsApp versions running on Android, Windows, iPhones, and Nokia phones. Keeping in line with the usual trend, WhatsApp first introduced encryption on Android before extending it to other platforms.

Even in error, you are protected: WhatsApp has become very focused on making encryption mandatory that it now refuses to work on unencrypted messages.

If a person tries to send a contact an unencrypted message, WhatsApp will immediately prevent him or her from doing so.

Additionally, the sender will be informed that this is because the messages being sent from his or her end are not encrypted.

No server hacks with end-to-end encryption: When the encryption process was first implemented by WhatsApp, it took place over a central hub.

Messages management and key exchange coordination take place centrally, apart from central control of the encrypted code that is executed on both the servers and mobile phones.

However, this did not result in complete safety and paved way for end-to-end encryption. As a result, messages will get decrypted only on the receivers’ handsets rather than in between the server and the handsets.


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Kaspersky Warns of Digital Medicine Risks on the Occasion of World Health Day

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On World Health Day, Kaspersky warns of risks tied to the digitisation of healthcare and use of telemedicine. Recent incidents show that medical services can be breached, and as a result, medical records may be leaked and then traded on the dark web.

The operations of healthcare services can get disrupted. Another aspect is that healthcare platforms may share user data with third parties that handle it irresponsibly.

Telemedicine has moved from a convenience to a core part of healthcare delivery, but its security model has not kept pace with its adoption, and the risks are not theoretical. Recent incidents highlight how real these risks have become.

In 2023, it was disclosed that Cerebral, a major telehealth provider focused on mental health services, had been sharing sensitive patient data – including mental health assessments, intake information, and personal identifiers – with third-party platforms such as social media and advertising networks. Millions of users were affected over several years.

More broadly, incidents in 2025 illustrate a different but equally critical risk – large-scale disruption of digital healthcare infrastructure. The breach of the ManageMyHealth patient portal exposed sensitive medical records of more than 120,000 patients, while the attack on SimonMed Imaging compromised over a million records and led to ransomware demands. These cases show that both telemedicine platforms and the broader digital healthcare ecosystems are increasingly targeted by attackers.

In parallel, scam campaigns focusing on medical topics are evolving, inviting patients for check-ups or follow-up consultations. Often the domains of the alleged “medical services” websites were created just a few weeks ago, links to the social media accounts on their pages are not working, and the Terms of Use and Privacy Policy pages are absent.

At the same time, these pages request users’ personal information, including photos of documents and even photos of parts of the body that need medical attention. Such websites often try to convince users with branding, fake doctor profiles, and urgent calls to action.

Users risk submitting sensitive personal data that can be either sold on the dark web, be used for identity theft, or subsequently used in more sophisticated attacks in the future that are targeted specifically at them for further data extortion.

To safeguard sensitive data, use a reliable security solution with an AI-powered anti-phishing component which prevents clicking on malicious links.

“The digital healthcare experience is transforming access to care, but it is also expanding the attack surface in ways many users underestimate. Medical data is highly valuable and actively traded on the dark web, making patients a prime target for fraud and targeted phishing.

“At the same time, health-related scams exploit urgency and trust, using fake consultations or discounted offers to trick users into sharing sensitive information. Patients should approach digital healthcare with the same caution as financial services – verifying providers, avoiding unsolicited links, and understanding how their data is used. Security and privacy must become a core part of the digital healthcare experience,” comments Anna Larkina, Web Content and Privacy Analysis Expert at Kaspersky.


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Nigeria Cyberattacks: Stronger Collaboration as a Panacea

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A series of recent cybersecurity incidents affecting financial institutions, government-linked platforms, and fintech operators is beginning to reveal a pattern that can no longer be ignored. What may have initially appeared as isolated breaches is now raising deeper concerns about a broader and possibly coordinated threat landscape targeting the country.

At the heart of this conversation is a critical shift in perspective. Cybersecurity incidents must no longer be viewed as problems belonging to individual organisations. They represent a national risk. The growing frequency and spread of these attacks suggest that no institution is immune, and more importantly, that those not yet affected cannot afford complacency. For organizations that have not experienced any disruption, this is not a moment for reassurance. The emerging pattern suggests it may only be a matter of time.

The growing concern follows a wave of alleged cyber incidents targeting organizations across banking, fintech, government, insurance, and education sectors, raising fears that sensitive data belonging to millions of users may be at risk.

At the centre of the unfolding situation are bank customers, fintech users, government workers, and students, whose personal and financial information could be exposed if the claims are substantiated. What initially appeared as isolated breaches is now being viewed as a potentially broader and more coordinated threat affecting Nigeria’s digital infrastructure.

Against this backdrop is a post by @TrendingEx on X (formerly Twitter), which claimed that more than 3TB of sensitive data linked to multiple Nigerian organizations had been published online. The post listed entities including Remita, Sterling Bank, Zenith Bank, the Oyo State Government, Leadway Assurance, GetBumpa, and Ahmadu Bello University, alongside more than 30 other companies.

Beyond these cases, the breadth of organizations named has raised deeper concerns about systemic exposure. The entities span financial services, public sector systems, insurance providers, fintech platforms, and academic institutions, suggesting that attackers may be probing shared weaknesses rather than targeting single organizations in isolation.

Cybersecurity incidents of this nature typically involve attackers exploiting technical vulnerabilities or misconfiguration to gain access, followed by the extraction of sensitive data. Such data is often used for extortion, fraud, or public leaks. In some cases, the scale of access may be overstated, but even limited breaches can have far-reaching consequences when systems are interconnected.

What makes the current situation particularly concerning is not just the incidents themselves, but their apparent timing and spread. The near-simultaneous emergence of cybersecurity concerns across banking, fintech, and public sector systems suggests a broader systemic vulnerability. From institutions such as Flutterwave to Fidelity Bank, past and recent incidents continue to illustrate that no segment of the ecosystem is insulated from risk.

Cybercriminal tactics in these scenarios often follow a familiar pattern. Attackers typically seek to gain initial access through technical vulnerabilities or misconfiguration. Once inside, they may attempt to extract sensitive data which is then used as leverage. In many cases, organizations are approached with demands, with the threat of public exposure if compliance is not met.

However, not all claims made by threat actors are accurate. In some instances, attackers exaggerate the scale of their access to increase pressure. A breach involving a limited number of records may be presented as a compromise affecting millions. This strategy is designed to create panic, attract attention, and force quicker responses from targeted organizations.

In response to rising cyber risks, the Central Bank of Nigeria has introduced a mandatory cybersecurity self-assessment for banks and financial institutions, signalling tighter regulatory scrutiny across the sector.

At the policy level, the Minister of Communications, Innovation and Digital Economy has also emphasized the importance of collaboration in strengthening national cyber resilience, highlighting the need for stronger coordination between government and the private sector.

Despite these developments, experts warn that the public narrative must be handled carefully. Focusing solely on individual organisations risks overlooking the broader issue of systemic vulnerability. More importantly, isolating affected institutions could discourage transparency and delay information sharing, both of which are critical in responding effectively to cyber threats.

The wider implication is that cybersecurity incidents can no longer be treated as isolated corporate challenges. As digital systems become increasingly interconnected, a breach in one organization can have ripple effects across multiple sectors, undermining trust in the broader digital economy.

For individuals, the risks are immediate and tangible. Data breaches can expose personal information, enabling identity theft, financial fraud, and targeted cyberattacks. This makes vigilance essential not just for institutions, but for everyday users who rely on digital platforms.

While the full extent of the alleged breaches remains unclear, the pattern of claims, their timing, and the range of organizations involved point to a critical moment for Nigeria’s cybersecurity landscape.

Whether these incidents are ultimately confirmed or not, they underscore a growing reality: in an interconnected digital environment, the security of one organization is closely tied to the security of all.

Gbolabo Awelewa, chief Business Officer, Esentry, said that industry-wide collaboration is critical. Cyberattacks targeting banks and payment platforms are becoming more coordinated and sophisticated, and no single organization can address them alone.

“Stronger collaboration between financial institutions, fintechs, regulators, and cybersecurity providers will enable faster threat intelligence sharing and a more unified response to emerging risks.

“At esentry, we see first-hand how proactive security measures make a significant difference. Organizations need continuous monitoring of their infrastructure, regular vulnerability assessments, stronger identity and access management, and real-time threat detection capabilities to identify and respond to attacks before they escalate.

“Beyond technology, institutions must also prioritize resilience; ensuring they can detect, respond to, and recover quickly from incidents.

“Ultimately, cybersecurity today is an ecosystem challenge, and organizations that combine strong security frameworks with industry collaboration will be better positioned to stay ahead of evolving threats,” he stated.

However, there is a growing concern that public discourse may be drifting in the wrong direction. Focusing on blame or singling out affected organisations risks undermining collective security. When institutions are publicly isolated, it may discourage transparency and delay critical information sharing, both of which are essential in responding to cyber threats effectively.

More importantly, a fragmented approach can embolden attackers. When threat actors perceive a lack of unity, they are more likely to expand their activities, targeting additional organizations and exploiting systemic weaknesses. This makes it imperative for stakeholders to adopt a unified stance.

The current moment calls for a shift from reaction to coordination. Regulators, private sector players, and cybersecurity professionals must work together to build a shared defence framework. This includes timely information sharing, joint incident response strategies, and consistent enforcement of security standards across the ecosystem.

For the public, the implications are equally significant. Data breaches are no longer abstract technical events. They carry real-world risks, including identity theft, financial fraud, and targeted social engineering attacks. As such, awareness and vigilance must extend beyond institutions to individual users who interact with digital platforms daily.

Ultimately, the message is clear. Nigeria’s cybersecurity challenges cannot be addressed in isolation. Whether the threat originates from within or outside the country, its impact is collective. Every breach, regardless of where it occurs, has the potential to weaken trust in the broader digital economy.


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CBN Slams Custodian Investment with N419m Fines over Rule Breaches

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Custodian Investment Plc shelled out N419.13 million in penalties to the Central Bank of Nigeria (CBN) and other regulators for breaches in the 2025 financial year, up sharply from N19.17 million in 2024.

CBN Slams Custodian Investment with N419m Fines over Rule Breaches

Custodian Investment

The company revealed this in its audited financial statements filed on the Nigerian Exchange (NGX).

CBN accounted for N391 million of the penalties, including a hefty N240 million fine for violating intraday liquidity facility (ILF) rules on a CBN bond trade.

The ILF allows banks to settle same-day transactions with repayment due by close of business.

Custodian also paid N76 million for Customer Due Diligence lapses and N75 million for ignoring internal audit fixes on a misclassified high-risk customer.

Smaller fines piled on, but the firm recovered the full N240 million ILF penalty from Sterling Bank Plc, the counterparty.

Despite the hit, profit before tax climbed to N77.35 billion, with fines under 1% of that figure.

After recovery, the net cost shrank below 1% of management expenses and profit.

Net income hit N91.32 billion, easily covering N21.1 billion in expenses including fines, fueled by surging investment income, fair value gains, interest growth and an insurance unit turnaround from loss to profit.


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