SCP Foundation

I'm not really feeling it as a concept, the 'reading on a timer' gimmick was done quite recently. Plus there's no indication as to where the timer is at or even that it exists and it makes the shift way more jarring and kind of awkward. The story in the base SCP article, a virus corrupts some files, isn't particularly compelling to me either. I imagine the Foundation make and keep physical copies of documents.
Plus I know this goes against the article theme but I hate the feeling of being locked out of content.

The timer may also be on too long, if I wasn't aware of it I would have likely never read the second part of this article.

Item 51 | CLASSIFIED

This may just me being new, but I have no idea who's files I'm viewing now. Is this still Foundation? I'm assuming not, is it supposed to be mysterious or is this a GoI or what? I don't know enough about the style this is supposed to be written in to critique it properly, but I'll try:

has corrupted multiple company and government databases before

This sentence seems a little awkward to read. I prefer "has previously corrupted multiple company and government databases."

Beta class person and an Alpha class person.

Class person gets repeated twice in quick succession, maybe "By one Beta and one Alpha class person"

Even during that incident, where someone had tried to corrupt our entire database

The phrasing here is strange. Maybe something simpler to explain the concept, like "our primary database was not corrupted when exposed to the cyberweapon."

All other databases were corrupted by the deployment of just one file corrupted by it, except ours.

The "all other databases" thing has been made clear already, and you just said the "except ours" bit the sentence before. This doesn't seem necessary.

SCP-000 has been removed of its Thaumiel class and re-classified to Gevurah class since Incident 000-01.

Phrased a little strangely. Maybe something like: "Following incident 000-1 SCP-000's class has been changed from Thamiel to Gevurah"

Due to Incident 000-01

So what were they doing before incident 000-01?

instances of SCP-000 must be destroyed

What actually is SCP-000? I don't see how "the corruption of files" can be destroyed. I understand destroying corrupted files but how exactly do you destroy the corruption itself?

to prevent further spread

The description doesn't really elaborate on how it spreads, how does deleting corrupted files stop the anomaly?

currently intensively guards

Intensively isn't needed, I think most readers would assume it would be intense because it's protecting such valuable data.

The idea of the storage of all SCP files in case of a mass database corruption is currently being considered

What does this mean? All SCP files are already stored. Do you mean physical copies? I've always assumed the Foundation has those anyway.

relatively quickly, and corrupt files quickly

Quickly mentioned twice in a row, maybe " able to bypass all known security measures and corrupt files quickly."

It has been proposed that SCP-000 may hold potential for Thaumiel classification as it may be able to be weaponized and used to corrupt enemy files and other files to prevent the dissemination of classified information.

To my understanding Thaumiel means it helps contain another SCP. I can see it being used to corrupt information about SCPs, but "corrupting enemy files" doesn't seem particularly contain-y to me.

automatically send duplicates with no embedded code or script to prompt such an action

Send duplicates where? If this acts like a virus surely you can call it a virus. From the rest of the description it sounds like random files are corrupted, but this makes it sound like it spreads itself around like a virus.

the automatic bypassing of all known security measures and the ability to create security restrictions, all within a short matter of time.

You've said this already earlier in the description, it's a little redundant to say it again.

attempted to access the document. Upon attempting to access it,

More redundancy. You tell me he attempts to access the document then tell me again, I don't need to read it twice.

restore the file with much effort

It's kind of a given that they're going to put effort into it, they're Foundation personnel. I don't think it needs to be said.

had begun an attempt

The phrasing/tense is a little confusing here. Are they still tracking patterns or did they stop after the incident?

little had prevailed

More weird phrasing. Maybe change it to something like " virtual agents had limited success"

Considering test logs and the incident,

Incident 000-01, I think it's more professional to call it by it's designated name

cancellation of future plans and protocols

But why? Even if the document is lost surely someone thought of the plan and can still explain it out loud.

therefore preventing the Foundation to accomplish its objective's.

This really goes without saying. I don't think it's needed here.

certain protocols for possible future events.

This is highly specific and never touched on again. What events? Maybe just "protocols for use in the future" or something

The files were eventually successfully unlocked, however, the files were severely corrupted and required the tracing of older iterations.

Maybe a full stop after "unlocked". The sentence reads a little awkwardly right now.

single corrupted file was sent, merely the receiving of the file being the cause

"The corruption was caused by a corrupted file which was sent to *wherever it was sent to*" might work better. The phrasing here, especially the last bit, is confusing.

absolutely no efforts to prevent the tracing of the source from the attacker, it was relatively difficult to find the source.

"relatively difficult to find the source" suggests they found it, but this is never touched on again. Who is it? And "absolutely no efforts" feels kind of subjective, maybe cut the "absolutely" or change it to "the attacker did not try to conceal the source"

TEST LOG 001

This whole test log is long and basically just restates everything I've just read. Nothing new is added here, I don't see the point of it.