How secure is iCloud? iCloud security check

How secure is iCloud? Find out all about the security features of iCloud such as login pro­ce­dures, en­cryp­tion, security measures and data pro­tec­tion.

How does iCloud en­cryp­tion work?

The topic of en­cryp­tion is divided into two parts with iCloud. Basically, your data is backed up on newer Apple devices with 256-bit AES en­cryp­tion. This applies, for example, to backups, photos, contacts, calendars and voice memos. iCloud offers this en­cryp­tion on the server itself and during trans­mis­sion. Although this is a good start, it also means that the data is not encrypted through­out. This can be remedied by optional end-to-end en­cryp­tion, which is part of the extended data pro­tec­tion mode (available from iOS 16.2, iPadOS 16.2 and macOS 13.1). This method ensures that only you have access to your data. Even Apple or third-party providers are denied access.

Does Apple process user data?

Without end-to-end en­cryp­tion, your data in iCloud can also be viewed and used by Apple. The company itself states in its terms and con­di­tions that no analysis data is generated for in­di­vid­ual users that can be clearly assigned in ret­ro­spect. However, various net activists accuse Apple of telling the wrong story. Although the analysis data is anonymized at first glance, the company can still assign it beyond doubt using a special ID.

How secure is iCloud against hacker attacks?

In the past, there have often been negative incidents that have raised the question of how secure iCloud really is. Back in 2014, there was a major data leak, when a security vul­ner­a­bil­i­ty in the “Find My iPhone” function was exploited and iCloud was ac­ces­si­ble to unau­tho­rized persons. This gateway was sub­se­quent­ly closed.

In 2017, however, hackers used the same function to lock numerous iPhones and threat­ened to delete data from iCloud. The company therefore responded with the two-factor au­then­ti­ca­tion mentioned above.

Other incidents relating to iCloud security were also re­peat­ed­ly covered by the media. However, these often involved phishing, in which users vol­un­tar­i­ly passed on their contact details or hackers were able to gain access to the cloud by using the same password multiple times. However, the mixture of password and con­fir­ma­tion code offered by two-factor au­then­ti­ca­tion also makes such attacks much more difficult to carry out. The question of how secure iCloud is therefore depends to a large extent on ad­di­tion­al pro­tec­tive measures and the behavior of in­di­vid­ual users.

Where are the service’s servers located?

While Apple has at least responded to breaches in the past and is using new methods and tools to better protect data, there is another factor that clearly speaks against iCloud in terms of security. As Apple is a US company, the company uses servers located in US data centers. This means that these servers are subject to US data pro­tec­tion law, which is sig­nif­i­cant­ly weaker than most European agree­ments and therefore allows more freedom. In some cases, data is also stored with third-party providers, which is permitted under US law. For many users, however, this approach is a cause for concern.

Since the Cloud Act of 2018, US au­thor­i­ties have had far-reaching powers that also apply when backups are uploaded to American servers from abroad. To this end, some companies work closely with gov­ern­ment in­sti­tu­tions and are obliged to forward data records in response to cor­re­spond­ing requests. For these reasons in par­tic­u­lar, German cloud providers perform sig­nif­i­cant­ly better in the most secure clouds com­par­i­son than US solutions such as iCloud, which take a more generous approach to data pro­tec­tion.

How does this affect data pro­tec­tion at iCloud?

The GDPR (General Data Pro­tec­tion Reg­u­la­tion) regulates the pro­tec­tion of personal data in Europe and ensures the free (voluntary) exchange of this data. One of the key points of this reg­u­la­tion is the rule that data may only be processed by a service provider (in this case the cloud service) if there’s a clear mandate for pro­cess­ing. It’s ques­tion­able whether Apple’s service meets these re­quire­ments and how much iCloud takes the data pro­tec­tion factor into account. Experts fun­da­men­tal­ly doubt that the GDPR and the Cloud Act are com­pat­i­ble. If you follow the logic of this as­sess­ment, this also has a massive impact on the question of how secure iCloud is.

How secure is iCloud for busi­ness­es?

While the iCloud security factor is also a question for private users, which they can weigh up and answer at their own dis­cre­tion, the situation is naturally different for companies that rely on cloud solutions. They want to offer their customers practical cloud solutions and also benefit from the increased flex­i­bil­i­ty them­selves. At the same time, however, they also bear re­spon­si­bil­i­ty for customer data and must take into account the dis­crep­an­cy between the GDPR and the Cloud Act. iCloud was orig­i­nal­ly only intended for private users. The Business Manager contract only offers limited relief, which is why companies find them­selves in a gray area when it comes to data pro­tec­tion with iCloud.

So…is iCloud secure?

Is iCloud secure enough for pro­fes­sion­al re­quire­ments? The honest answer here is no. Although Apple has made sig­nif­i­cant im­prove­ments in recent years and strength­ened the en­cryp­tion of iCloud, the problem of data centers abroad still remains. While private users have to assess and bear this risk them­selves, the risk for companies is much greater. In an honest cloud storage com­par­i­son, the security factor therefore speaks against iCloud and in favor of one of the many domestic providers.