Harvest finance got hacked for around $34M due to a flashloan attack which manipulated the price in the Curve pool to retrieve more USDT tokens than originally deposited USDT amount in fUSDT pool.
BlockApex 
December 15, 2020 The global COVID-19 pandemic has not only brought significant challenges to society but has also spurred innovation and the development of solutions to combat its effects. One such innovative initiative is Vaccify, an open-source COVID-19 project by TrustNet Pakistan. By leveraging blockchain technology, Vaccify ensures the immutability and tamper-proof nature of digital credentials. This section explores the high-level technical architecture of Vaccify, highlighting the key actors involved, the use of blockchain technology, and the seamless verification process using touchless QR code scanning.
The primary objective of Vaccify is to enable individuals to prove their COVID-19 vaccination status securely and efficiently. By leveraging blockchain technology and verifiable digital credentials, Vaccify aims to address the pressing need for trustworthy and privacy-preserving immunization verification. The initiative seeks to facilitate the safe resumption of daily activities, such as travel and work, while protecting public health and ensuring data privacy.
Vaccify encompasses various actors, including hospitals, healthcare centers, laboratories, testing facilities, issuers, and verifiers. The architecture leverages blockchain technology to ensure immutability and tamper-proof characteristics of the digital credentials. The process involves accredited hospitals issuing digitally signed vaccination certificates directly to individuals' smartphones, which can be easily verified using touchless QR code scanning by authorities acting as verifiers.
At the heart of Vaccify's technical architecture lies blockchain technology, which ensures the integrity and security of digital credentials. By leveraging a decentralized and distributed ledger, Vaccify guarantees the immutability of vaccination certificates, making them tamper-proof. This aspect is vital in combating fraudulent activities and maintaining the trustworthiness of the digital trust ecosystem.
Accredited hospitals are the primary issuers of digital vaccination certificates within the Vaccify ecosystem. These hospitals digitally sign the certificates, assuring their authenticity and credibility. The certificates are then directly sent to individuals' smartphones, providing them with immediate access to their verifiable vaccination status. This streamlined issuance process ensures that individuals can conveniently store and present their digital certificates whenever required.
Authorities, acting as verifiers, play a crucial role in the Vaccify ecosystem by verifying the authenticity and validity of digital vaccination certificates. The verification process is designed to be touchless and efficient, employing QR code scanning technology. By scanning the QR code on an individual's smartphone, authorities can quickly and securely validate the vaccination status, ensuring compliance with health and safety regulations.
A digital credential surpasses paper credentials because of some obvious advantages offered by the former. Digital credentials maintain the confidentiality of people. It would cryptographically verify their health status without revealing any personal information. Moreover, as it is based on Blockchain, all the records will be immutable. Unlike paper credentials, these will be issued in no time. In case of false certificate issuance, it could be revoked in seconds.
Vaccify will enable people to prove their vaccination against Coronavirus by a simple touchless QR code scanning. Digital credentials issued under Vaccify will also have international trust interoperability. It means the credential issued in Pakistan can be verified anywhere in the world. TrustNet Pakistan is using emerging technology to integrate this digital framework with commercial services in Pakistan.
Vaccify holds the potential to revolutionize the way societies manage health credentials, not only in the context of COVID-19 but also for future healthcare scenarios. The initiative aligns with global efforts, such as the COVID Credentials Initiative (CCI), to develop verifiable credential solutions that prioritize trust and privacy. As Vaccify continues to evolve, it aims to integrate with commercial services and expand its application beyond the healthcare sector, creating a robust and future-ready digital trust ecosystem.
Xord.solutions, now BlockApex made significant contributions to the development and success of Vaccify, an open-source COVID-19 initiative by TrustNet Pakistan. Through its collaborative partnership with TrustNet, BlockApex has brought its technological expertise to enhance the technical architecture of Vaccify, ensuring the security and efficiency of the digital trust ecosystem. Their open-source contributions, coupled with their focus on user experience and interface design, have simplified access and verification processes within Vaccify. BlockApex's contributions extend beyond the current initiative, as they actively drive innovation for future digital trust ecosystems, shaping a safer and more resilient post-pandemic world. Together, BlockApex and TrustNet Pakistan worked on paving the way for secure and privacy-preserving digital systems that address pressing healthcare challenges.
Vaccify exemplifies the power of technological innovation and community collaboration in addressing the challenges posed by the COVID-19 pandemic. By providing a secure and efficient means of verifying COVID-19 vaccination status, Vaccify paves the way for a post-pandemic world where trust, privacy, and verification are paramount. As individuals and organizations join the Vaccify movement, the vision of a resilient and connected society becomes attainable. Together, we can build a future where digital credentials empower individuals, protect public health, and drive the transformation of various sectors on a global scale.
Give a read to Hack analysis Of DeusDAO!
Harvest finance got hacked for around $34M due to a flashloan attack which manipulated the price in the Curve pool to retrieve more USDT tokens than originally deposited USDT amount in fUSDT pool.
BlockApex 
June 17, 2022 BlockApex (Auditor) was contracted by VoirStudio (Client) for the purpose of conducting a Smart Contract Audit/ Code Review of Unipilot Farming V2. This document presents the findings of our analysis which started from 25th Feb 2022.
BlockApex
April 2, 2022 On April 9, 2023, SushiSwap suffered a security breach which led to a loss of over $3.3 million. The attack exploited a flaw in the RouteProcessor2 contract of SushiSwap's router processor. The fallout was felt across several major chains that had previously authorized the RouteProcessor2 contract.
BlockApex
July 20, 2023 The successful upgrade of the London Hard Fork is a big difference from the fork leading to Ethereum Classic that took place back in 2016. However, despite their divergence, both are milestones in the Ethereum world- guaranteed to have lasting impacts on the blockchain as we know it. Read more to find out the circumstances surrounding each hard fork and the role they may play in shaping Ethereum's future.
BlockApex
August 25, 2021 On April 15th, 2023, Hundred Finance was hacked, resulting in a loss of approximately $7.4 million USD in various cryptocurrencies. The attacker exploited an integer rounding vulnerability in the platform's contract logic when a market was empty.
BlockApex
June 21, 2023 This blog explores the fascinating world of fuzz testing methodologies and frameworks. We delve into stateless and stateful fuzzing. Bounded Model Checking (BMC) is introduced as a technique to verify systems against predefined specifications. Additionally, we discuss the essence of End-to-End (E2E) testing, combining structured scenarios with fuzz testing's unpredictability. Lastly, we compare renowned fuzzing tools, Echidna and Foundry, highlighting their unique features and differences.
BlockApex
July 31, 2023 Chainpals transaction contract is responsible for handling the multi-phased transactions that take place between a buyer and a seller, each overlooked by escrow managers to make sure everything goes smoothly.
BlockApex
July 1, 2022 Fixing a bug in traditional software development is often likened to solving a difficult puzzle, each presenting its own challenges. This task has always been complex and time-consuming. However, resolving bugs in a blockchain system is even more demanding due to its transparent & permissionless nature and the high stakes involved with users' funds.
BlockApex
June 19, 2023 Dafi’s “dbridge” enables users to bring their ERC-20 $DAFI tokens across from the Ethereum network to Binance Smart Chain, and vice versa, with aims of making $DAFI available on multiple high-speed and low-cost networks.
BlockApex
December 6, 2021 
