January 23, 2023 at 12:00 am
Comments posted to this topic are about the item The Challenge of Deleting Data
January 24, 2023 at 9:56 am
GDPR gives people the right to the following:-
These all create headaches with archive/backups. In the event of a restore you need to be able to replay the actions above up to the point of restore and possibly beyond. You need a means of logging the actions outside of the DB being restored.
In AWS S3 buckets are now encrypted by default and we can apply AWS KMS encryption keys beyond that. The problem is storing the data in an easily recoverable format that is efficient to query and with a process that is efficient.
What I have seen is an underestimate of the amount of manual effort required to enact GDPR processes when they have been a low priority, side-of-desk addition rather than a properly resourced design and implementation.
There is an SSIS component that allows data to be written out to Parquet format, I just wish that there was a native SQL Server command to do the same or an option in BCP to do so. That would provide a good foundation for a lot of long term archiving headaches.
January 24, 2023 at 7:04 pm
I think the biggest challenge, as you allude to, is the effort to track and ensure this stuff is handled well. I've been concerned about the restore/replay issues, and ensuring across all places we keep data that we remove it or have a process to ensure removal over time.
Like EKM, we've built a lot of tech that isn't easy to manage when things aren't flowing as we expect.
January 25, 2023 at 9:08 pm
Really, going forward companies should minimize the amount of PII data that they collect about their customers. There comes a point of diminishing return where the usefulness of data in terms of business development doesn't warrant the risk of keeping it around. I think that part of the problem are companies (typically startups in search of funding) who value their business in terms of digital assets when basically all they do is something more mundane like (for example) sell concert tickets or porn. Now they have this huge trove of sensitive data (probably not managed by the best and brightest DBAs) waiting to be exploited by hackers or venture capitalists.
"Do not seek to follow in the footsteps of the wise. Instead, seek what they sought." - Matsuo Basho
January 25, 2023 at 9:12 pm
It's not even mundane things. I see some orgs that sell to other businesses and give them trials or PoCs with live data. When those companies move on without being customers, or when they stop being customers, there's a lot of risk holding that data. Yet plenty of companies don't recognize or account for this.
Whether you work with consumers or businesses, every piece of PII is a liability. It might be an asset as well, but you should be sure you understand the net gain or loss.
February 1, 2023 at 2:54 pm
We used to use magnetic tape for arhiving data and avoided needing to delete it OR to pay ongoing costs for online storage. It probably saved us lots of money. Sure, it wasn't so easily accessible, but we could pull reels off tthe shelf and satisfy the need to researching records pretty easily, assuming the data was nicely designed for storage of history. Always had a matched pair of drives for reel-to-reel merging of data off our main systems. I read that the current tapes have about 15-year life, which is fairly adequate and they can easily be refreshed on a schedule. Even back in 1974 our computer room had a closet with shelves and racks for holding the tapes, more bulk storage was kept in the company vaults, and we could easily take multiple reels off-premises for current backups. And we even had arrangements with other nearby companies to exchange storage of tape libraries.
Our design was that as data aged it became more and more compressed and summarized, but still had the essential information.
And another thought about this, we never got hacked and never lost any critical data either.
Rick
Disaster Recovery = Backup ( Backup ( Your Backup ) )
February 7, 2023 at 7:35 pm
We used to use magnetic tape for arhiving data and avoided needing to delete it OR to pay ongoing costs for online storage.
...
And another thought about this, we never got hacked and never lost any critical data either.
That was back in the day when hackers had to put on a cat suit, crawl though the IT department ventilation shaft, and cut through a locked steel door to steal the data.
"Do not seek to follow in the footsteps of the wise. Instead, seek what they sought." - Matsuo Basho
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