What follows is a brief example how to read the debug output.Please be aware that the output is non-standard, and may changefrom release to release. We are using the default SunJSSEX509KeyManager and X509TrustManager which prints debuginformation.
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In 2021, Bitdefender was accused of self-promotion when releasing and publicly announcing a decryptor to the detriment of actual victims with regards to DarkSide, a hacking group. In 2020, DarkSide switched their main encryption ransomware product over to an "affiliate" model wherein other attackers could download and use their software in exchange for a portion of the profits. However, they introduced a bug in the process where affiliate hackers would all use the same private RSA key - meaning that a decryption package for a single target who paid the ransom would work on any target that had the ransomware installed. Security researchers noticed and were quietly already helping victims of the software, but with no public notice, making it so that the attackers would only see an inexplicable decrease in ransom payments that could be written off as chance. At about the same time, Bitdefender researchers developed a decryptor and issued a blog post in January 2021 describing the flaw and offering the decryptor as a free download, in order to make as many organizations as possible aware of its existence to reduce the impact of Darkside ransomware attacks. This was criticized in an article in the MIT Technology Review: claiming, first, Bitdefender's program wasn't even safe - it was flawed and would "damage" files decrypted with it due to bugs within it. Second, the blog post tipped off DarkSide as to the nature of the flaw; DarkSide promptly patched the bug and sarcastically thanked Bitdefender for pointing it out, then went on with their campaign of extortion. A notable incident that took place after Bitdefender's public disclosure was the Colonial Pipeline cyberattack in May 2021. While the security researchers who had been using the flaw before acknowledge that it's probable DarkSide would eventually have noticed and fixed the issue, they still criticized Bitdefender for using the bug merely for a brief burst of publicity, rather than in the way that would most help victims of the scheme.[21] Bitdefender has defended their actions on their blog.[22] The article and blog post triggered a discussion among cybersecurity professionals about the pros and cons of publicly disclosing decryptors.
In 2018, ICANN changed the trust anchor for the DNS root for the first time. Many lessons were learned about DNSSEC during that process. Furthermore, many resolver operators became more aware of DNSSEC and turned on validation, and the world got to more clearly see how the entire DNSSEC system worked. In the coming years, ICANN hopes to see greater adoption of DNSSEC, both by resolver operators and zone owners. This would mean that more users everywhere could benefit from DNSSEC's strong cryptographic assurance that they are getting authentic DNS answers to their queries.
Most applications will run better in an active/passive configuration, as they are not designed or optimized to run concurrently with other instances. Choosing to run an application that is not cluster-aware on shared logical volumes may result in degraded performance. This is because there is cluster communication overhead for the logical volumes themselves in these instances. A cluster-aware application must be able to achieve performance gains above the performance losses introduced by cluster file systems and cluster-aware logical volumes. This is achievable for some applications and workloads more easily than others. Determining what the requirements of the cluster are and whether the extra effort toward optimizing for an active/active cluster will pay dividends is the way to choose between the two LVM variants. Most users will achieve the best HA results from using HA-LVM.
HA-LVM and shared logical volumes using lvmlockd are similar in the fact that they prevent corruption of LVM metadata and its logical volumes, which could otherwise occur if multiple machines are allowed to make overlapping changes. HA-LVM imposes the restriction that a logical volume can only be activated exclusively; that is, active on only one machine at a time. This means that only local (non-clustered) implementations of the storage drivers are used. Avoiding the cluster coordination overhead in this way increases performance. A shared volume using lvmlockd does not impose these restrictions and a user is free to activate a logical volume on all machines in a cluster; this forces the use of cluster-aware storage drivers, which allow for cluster-aware file systems and applications to be put on top.
Only resources that can be active on multiple nodes at the same time are suitable for cloning. For example, a Filesystem resource mounting a non-clustered file system such as ext4 from a shared memory device should not be cloned. Since the ext4 partition is not cluster aware, this file system is not suitable for read/write operations occurring from multiple nodes at the same time.
A sequence number increased whenever an alert is being issued on the local node, which can be used to reference the order in which alerts have been issued by Pacemaker. An alert for an event that happened later in time reliably has a higher sequence number than alerts for earlier events. Be aware that this number has no cluster-wide meaning.
The obvious conclusion for users is that they must choose their passwords randomly. Some software does provide a random password. Be aware, however, that such password-generating software may, deliberately or not, use a poor pseudo-random generator, in which case what it provides may be imperfect.
A mechanism for obtaining a document node and a media type, given an absolute URI. The total set of available documents (modeled as a mapping from URIs to document nodes) forms part of the context for evaluating XPath expressions, specifically the docFO30 function. The XSLT document function additionally requires the media type of the resource representation, for use in interpreting any fragment identifier present within a URI Reference.
The stylesheet does not describe how a source tree is constructed. Some possible ways of constructing source trees are described in [XDM 3.0]. Frequently an implementation will operate in conjunction with an XML parser (or more strictly, in the terminology of [XML 1.0], an XML processor), to build a source tree from an input XML document. An implementation may also provide an application programming interface allowing the tree to be constructed directly, or allowing it to be supplied in the form of a DOM Document object (see [DOM Level 2]). This is outside the scope of this specification. Users should be aware, however, that since the input to the transformation is a tree conforming to the XDM data model as described in [XDM 3.0], constructs that might exist in the original XML document, or in the DOM, but which are not within the scope of the data model, cannot be processed by the stylesheet and cannot be guaranteed to remain unchanged in the transformation output. Such constructs include CDATA section boundaries, the use of entity references, and the DOCTYPE declaration and internal DTD subset.
The conformance rules for XSLT 3.0, defined in 27 Conformance, distinguish between a basic XSLT processor and a schema-aware XSLT processor. As the names suggest, a basic XSLT processor does not support the features of XSLT that require access to schema information, either statically or dynamically. A stylesheet that works with a basic XSLT processor will produce the same results with a schema-aware XSLT processor provided that the source documents are untyped (that is, they are not validated against a schema). However, if source documents are validated against a schema then the results may be different from the case where they are not validated. Some constructs that work on untyped data may fail with typed data (for example, an attribute of type xs:date cannot be used as an argument of the substringFO30 function) and other constructs may produce different results depending on the datatype (for example, given the element , the expression @price gt @discount will return true if the attributes have type xs:decimal, but will return false if they are untyped).
The processor may be configured to use a fixed set of schemas, which are automatically used to validate all source documents before they can be supplied as input to a transformation. In this case it is impossible for a source document to have a type annotation that the processor is not aware of.
Streaming can be combined with schema-aware processing: that is, the streamed input to a transformation can be subjected to on-the-fly validation, a process which typically accepts an input stream from the XML parser and delivers an output stream (of type-annotated nodes) to the transformation processor. The XSD specification is designed so that validation is, with one or two exceptions, a streamable process. The exceptions include:
[Definition: The declarations within a stylesheet level have a total ordering known as declaration order. The order of declarations within a stylesheet level is the same as the document order that would result if each stylesheet module were inserted textually in place of the xsl:include element that references it.] In other respects, however, the effect of xsl:include is not equivalent to the effect that would be obtained by textual inclusion.
The effect of these declarations is that a non-schema-aware processor ignores the xsl:import-schema declaration and the first template rule, and therefore generates no errors in respect of the schema-related constructs in these declarations.
The schema-location attribute is a URI Reference that gives a hint indicating where a schema document or other resource containing the required definitions may be found. It is likely that a schema-aware XSLT processor will be able to process a schema document found at this location. 2ff7e9595c
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