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Classifying SharePoint Threats

SharePoint threats come in many forms; however it is most important to remember that SharePoint is merely an ASP.NET application, and thus subject to all if not most of the same core vulnerabilities that affect its baseline components. All of the layers that make SharePoint function as a product such as SQL server and IIS are subject to vulnerabilities. This leads to a fair amount of threats being considered practical against a SharePoint environment because the technology gap is so large. As a result, one of the greatest skills that can be mastered is differentiating between what is a...

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SharePoint 2013 Security: Authentication Types And On-Premise Pass The Hash (PTH) Attacks

Claims-Based Authentication Claims based authentication is a more contemporary authentication technique, whereas Windows based classic authentication has been in place in enterprise systems for years. Traditional approaches to authentication are not flawed. However, they tend to be a single solution for what tends to be a multi-headed problem. To tackle this, it is necessary to have a system that promotes interaction with multiple sources of data, rather than limiting an organization to one. Additionally, it tends to be difficult to adapt legacy identity system if there are changes that...

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Office 365 Security Series Primer

Collaborative technology has a unique way of exposing security flaws owing to the sheer everyday enterprise user consumption and the potential value of sensitive or propriety business information to an attacker. The security strategy that a SharePoint architect implements has to remain fluid, graceful and expressive in order to compensate for continuous technology changes. SharePoint as a distributed system combines various resources, progressively growing by provisioning on-demand solutions for the enterprise. In order to maintain uninterrupted and secure operations, proper security services...

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Using The ULS In CSOM / Office 365

SharePoint online has really limited availability for error logging built in. Most of the time you have to throw the exception to either standard output, a list, or if it is a provider hosted application using a local text file. None of these options is terrible attractive since SharePoint already has logging availability in the ULS and a lot of fancy tools that allow relevant parsing to occur. Using the ULS off premise isn’t really as easier as it is on premise (shocker). To do it, firstly, you have to make the relevant┬áservice reference. This is located here: http://{site...

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Add An Item To A Folder To A List With CSOM

Its really similar to how you would do it with traditional server side OM means. This is a static helper method that will generate a new folder in some list. Essentially we just have to spin a ListItemCreationInformation object specified with empty properties and just set the FolderUrl. C# < view plain text > public static ListItem AddItemInFolder(string siteUrl, string listName, string folderPath, ClientContext clientContext) { List list = clientContext.Web.Lists.GetByTitle(listName); ListItemCreationInformation listItemCreationInformation = null; if...

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Getting Safe Value From ListItem In Office 365 And SharePoint Online

Reading a ListItem in SharePoint online is nothing fantastic and is pretty similar to reading list items in the throwback server OM models. Consider the below example that starts with a ListItemCollection. We are reading the value of SomeCrap. The problem here is, what if that returns null? That’s an issue. C# < view plain text > ListItemCollection items = list.GetItems(CamlQuery.CreateAllItemsQuery()); list.Context.Load(items); list.Context.ExecuteQuery(); foreach (ListItem item in items) { list.Context.Load(item, x =>...

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