Some businessmen try to increase the privacy of their data by combining encryption technology and blockchain. There are projects like Oasis Labs and Enigma that are fully focused on maintaining user privacy. At the same time, others focus on preventing companies from storing data. Therefore, there is no way to guarantee that personal data will be deleted in the corporate computer system. The reliable consensus on Blockchain technology ensures that personal data is used properly.

Protection against software and hardware attacks
Companies like Oasis Labs, which developed the Ekiden system, use smart contracts outside the blockchain in a reliable deployment environment, or TEE, to provide the same security as if they were in the chain.

An isolated secure zone allows the host processor to completely protect code and data from software and hardware attacks.

No one, not even the miners, can see the symbol in action. These solutions appear complex but provide privacy beyond the level of transaction.

Such projects can be useful for financial, commercial and medical services, as contracts often contain confidential personal information.

Personal information is checked by consumers.
In an Enigma project, MIT researchers developed a protocol on top of an existing blockchain. Enigma also follows “secret contracts”, as opposed to “smart contracts” found with nodes in the blockchain that are able to compute data without even seeing them.

A simplified version of what Enigma can achieve can be explained by the example of Andre and Maria Louise. They were trying to find out who had the most money in their bank account without revealing the real figure. This seems like a simple task, but the technological implications of achieving it are widespread. Researchers believe that this will allow users to control their data.

Confidentiality in the exchange of medical information between patients and service providers
The MedRec project was also launched at the Massachusetts Institute of Technology (MIT) and aims to implement a health care privacy solution. MedRec positions itself as a “network, not a service,” providing a secure and seamless exchange of medical information between patients and a service provider.

In it, patients can maintain complete control over their information and provide access to service providers, and not vice versa, as today. Healthcare professionals can join the network and provide patient data on request with permission from the patient.

MIT researchers have already completed several pilot projects with other research partners and are working on other improvements. MedRec-like solutions can reduce the number and costs of health data breaches that are still prevalent in the industry and encourage the development of HIPAA-compliant e-health solutions.

Preventing theft of personal information and ensuring confidentiality when delivering goods using drones
Silicon Valley’s growing company is developing and supporting ecosystem development to improve the security of IoT products. The Internet of Things – for example, mobile phones, vehicles, drones, etc. – Network security can be enhanced with blockchain technology.

The solution included precision coding tags that give drones a unique identification in a block of blocks. IoT applications use this unique identification to allow (or deny) drones access to safe locations, such as a home or warehouse. The coded drone communicates with the chip reader at the access point associated with the party, such as a window or door. The chip reader verifies the encrypted signature of the chip and verifies its authenticity on the blockchain. After confirming the permit, a window / door opens and delivery can be completed. A family wallet can pay for an unmanned delivery – just like paying for pizza, but it’s automatic.

Similarly, technology giant IBM received a new patent on a blockchain-based system late last year. It will cover privacy issues and drone security.

The described solution can be used to control the exchange of confidential data, for example related to the location of the drone, the manufacturer, the model, the flight behavior, the car’s proximity to restricted or restricted areas, and additional information needed for smooth handling.

The patent indicates that the solution will be used to “prevent identity theft from unmanned aerial vehicles” using the IoT altimeter, which includes takeoff, tracks beam height and sends data to the blockchain platform.