Cryptage des données

Définition

Le chiffrement des données est un processus de sécurité qui convertit les données d’un format lisible, appelé « texte en clair », en une forme codée et illisible, appelée « texte chiffré ».

Encryption effectively scrambles usable data into a unique, random string of bits – rendering it undecipherable.

Decrypting data  requires access to a private encryption key, which decodes and unscrambles the encrypted dataset.

Qu’est-ce que le chiffrement ?

Le chiffrement est une mesure de sécurité qui transforme des données lisibles (données en clair) en un format illisible à l’aide d’une clé de chiffrement unique (et privée). Le chiffrement rend les données d’entreprise illisibles et sans valeur pour les cybercriminels qui n’ont pas accès à la clé utilisée pour chiffrer ces données.

Organizations that rely on plaintext format when storing or transmitting data have an increased risk of valuable business data and assets becoming compromised or falling into the wrong hands. Another danger that accompanies data theft is the possibility of public exposure of the victim’s private data.

Encryption provides an extra layer of security and helps organizations insulate their data, wherever it lives. Data protection solutions offer advanced encryption for both data at rest and in flight. In addition to encryption, cloud-based solutions can also isolate data copies in air-gapped, immutable locations. This ensures that data backups are unreadable and housed in immutable locations outside an organization’s network – keeping them out of reach from bad actors.

Qu’est-ce que le chiffrement et comment fonctionne-t-il ?

On the surface, encryption is a simple approach to a complex problem and is an essential element in data protection and de Recovery. Le chiffrement ajoute une couche de protection indispensable en rendant illisibles les informations commerciales sensibles, à moins qu’elles ne soient déverrouillées à l’aide d’une clé de chiffrement appropriée. Sans accès à cette clé de chiffrement unique, les personnes non autorisées qui parviennent à accéder aux données n’ont aucun moyen de les déchiffrer ou de les exploiter.

Les principaux aspects du chiffrement comprennent :

• Robust security posture. Adopt an edge-to-cloud security posture that protects the edge, the data centers and the cloud properties. Empower IT to monitor the state of the environment’s security, manage access, encrypt data and lutter de manière proactive contre le risque d’attaques potentielles.
• Encryption. Organizations must establish strict policies for encrypting everything, especially data in flight, data at rest, and when possible, data in use. A unique encryption key is required to scramble data initiating the encryption process. Encryption is not a luxury and is widely available for IT to incorporate in data protection policies. There are two primary types of encryption keys: public and private. Most cloud providers offer rock-solid encryption and key management for the multi-tenant public cloud environments.
• Decryption. Using the unique encryption key, one can decrypt data, turning scrambled data back into a readable plaintext format. Encryption and decryption are commonly used in our day to day lives as many applications silently encrypt messages, data, and files without intervention from users.
• Key management. Like passwords, encryption keys need to be protected with restricted access. Some solutions maintain and protect encryption as part of their offerings. For solutions that allow customers to bring their own keys (BYOK), key management tools often sophisticated cryptography for safeguarding.
•  Prevention. Implement robust, zero-trust access controls and keep all antivirus apps up to date. Companies can avoid most of the potential risks by keeping unauthorized parties out of their environments at the first contact with the network.
• Proactive education. Cybercriminals use phishing and social engineering to penetrate the intended targets. Enterprises should routinely train and educate employees on the nature and the dangers of cyberattacks and the vital role they play in protecting valuable digital assets.

Pourquoi le chiffrement est-il important ?

The number of malicious cyberattacks incidents is on the rise, driven by  work from home (“WFM”) and distance learning vulnerabilities.

Les mots de passe complexes ne constituent plus une protection efficace et sont souvent détournés puis vendus à des fins lucratives.

Sans chiffrement adéquat, les entreprises risquent fort d’être victimes d’attaques, de perdre des données et de subir des perturbations de leurs activités. Grâce à des outils appropriés de protection et de chiffrement des données, les entreprises peuvent efficacement garantir la sécurité et la récupérabilité de leurs données, tout en les protégeant contre tout accès non autorisé.

Avantages du chiffrement

Les données et applications numériques sont les moteurs de la croissance des entreprises. Protéger les données des charges de travail critiques contre toute perte ou tout vol potentiel est vital pour la survie de l’entreprise. Le chiffrement est un élément incontournable dans la lutte contre les cybermenaces et joue un rôle significatif dans la protection des données, notamment :

Mitigating attacks. Encryption’s primary goal is to prevent unauthorized parties from accessing proprietary data. Encrypted data is of no value to cybercriminals seeking to sell or publicly expose the stolen data – as it cannot be read, exploited or monetized. Without access to unique and private access keys, valuable business data is unreadable, and acts as a deterrent for cybercriminals.

Diminishing risk. Solutions with rigorous Encryption capabilities remove the prospect of negative exposure. While Encryption helps thwart the attempts of bad actors, it also narrows the window of liability when maintaining, managing, and storing sensitive information and data.

Lowering costs. The cost of protection pales compared to the costs of a business shutdown and potential customer data loss. Businesses should err on the side of proactive safety and adopt data protection solutions with robust encryption policies, regardless of their storage destination.

Cas d’utilisation courants du chiffrement

Les organisations de toutes tailles ont besoin de protéger leurs données. Le chiffrement joue un rôle essentiel dans ces solutions et contribue grandement à la sécurisation des données d’entreprise :

• Data protection. Without proper protection, data remains susceptible to potential loss and corruption. Encryption preserves the integrity of your data and usable backup copies that you alone can access with your protected encryption keys.
• Business continuity. With encryption software, businesses can protect all of their data and configurations needed to bring business back to life following unpredictable disruptions. Encrypted data is of no use to cybercriminals and may serve as a deterrent against future attacks.
• Disaster recovery. It is accepted that all businesses and IT environments may face disruptive encryption events that could cause data loss, corruption, or disrupted IT operations. Putting a robust encryption strategy in place reduces the risks associated with ill-intended cyberthreats and data theft.

Commvault propose-t-il un service de chiffrement ?

Yes! Commvault SaaS Backup offers integrated encryption of data in flight and data at rest. Whether data is stored on user devices, in SaaS applications, or across on-premises and cloud environments, we provides comprehensive coverage to safeguard your data from today’s data loss threats. Demandez une démonstration today to learn more!